Abstract

In this paper, we present the acousto-optical (AO) Q-switched performance of a holmium (Ho):gadolinium tantalate (GdTaO4) (Ho:GTO) laser pumped by a thulium (Tm)-fiber laser emitting at 1.94 µm. In the efficient continuous wave (CW) regime, a maximum output power of 30.5 W at 2068.8 nm was achieved, corresponding to a slope efficiency of 74.9% with respect to the absorbed pump power. In the Q-switching regime, pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were obtained with pulse repetition frequencies of 10 kHz, 20 kHz, and 30 kHz, respectively. The minimum pulse widths were 18 ns, 23 ns, and 26 ns, corresponding to peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.

© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

1. Introduction

Holmium (Ho) lasers operating in the 2-µm spectral range are attractive for many applications such as ranging, medicine, and environmental monitoring [13]. In particular, using them as the pump source enables high-performance middle infrared (IR) laser radiation to be achieved with nonlinear optical conversion methods. Using an in-band pumping method, we observed a weak thermal load and a low upconversion loss in the Ho-doped materials, which makes the Ho laser working at 2 µm more likely to obtain high efficiency and high output power. In the past two decades, numerous Ho-doped oxide [411] and fluoride [1215] materials have been successfully used to produce 2-µm laser radiation. Usually, the output wavelengths of the Ho-doped laser based on oxide and fluoride materials are located around 2.1 µm and 2.05 µm, respectively. The Ho-doped laser emission in the range from 2.07 µm to 2.08 µm has been hardly reported, although Ho-doped tungstates [16,17] and Ho:CaF2 [18,19] lasers can produce laser radiation around 2.08 µm. Unfortunately, under rare-earth doping conditions, low thermal conductivity seems unsuitable for achieving high output power.

Orthotantalate LnTaO4 (Ln = Sc, Y, La, Gd, Lu) has a high photoluminescence efficiency. In particular, gadolinium tantalate (GdTaO4, GTO) is a suitable host for Bi, Eu, and Tb ions [2022], which are used to detect high-energy radiation. Because of its low symmetry and strong symmetrical crystal field, the GTO crystal is a promising host for doping of rare-earth elements. Recently, continuous wave (CW) and pulsed Nd-doped GTO lasers have been demonstrated [2327]. A maximum CW output power of 7.7 W was reported in Nd:GTO laser recently [27]. Ho-doped gadolinium tantalate (Ho:GTO) crystal is a promising choice to obtain 2-µm laser output. However, there are few studies on the lasing performance of the Ho:GTO crystal. In 2019, our group presented the spectral properties of Ho:GTO crystal at room temperature and the CW lasing performance with an output power of 11.2 W at 2.07 µm [28]. In addition, the single-longitudinal-mode characteristics of the Ho:GTO laser was also demonstrated [29]. However, to the best of our knowledge, the Q-switching performance of Ho:GTO lasers has not been reported to date.

In this paper, we demonstrate the acousto-optical (AO) Q-switching performance of the Ho:GTO laser for the first time. Under an efficient CW regime, a maximum output power of 30.5 W at 2068.8 nm was realized with a slope efficiency of 74.9% and a beam quality factor (M2) of approximately 1.5. Under the AO Q-switching regime, maximum pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ, corresponding to minimum pulse widths of 18 ns, 23 ns, and 26 ns, were achieved with pulse repetition frequencies (PRFs) of 10 kHz, 20 kHz, and 30 kHz, respectively, resulting in calculated peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively.

2. Experimental setup

Figure 1 schematically shows the experimental setup of the AO Q-switched Ho:GTO laser. The pump source is a custom-designed thulium (Tm)-fiber laser that emits at 1940nm and has a maximum output power of 70 W and an M2 factor of 2.2. The pump spot radius was measured to be 0.35 mm around the laser crystal, which means that the pump Rayleigh length can be calculated to be about 190 mm inside the laser crystal. A c-cut of 1.0 at.%- M-type Ho:GTO crystal with dimensions of 4×4 mm2 (in cross section) and 24 mm (in length) was used as the gain medium, whose two end faces were polished and antireflection coated for the pump and laser wavelengths. Under the no-lasing conditions, the single-pass pump absorption efficiency was measured to be 83.7%. The laser crystal was mounted on a copper heatsink, which was wrapped with 0.1-mm-thick indium foils, aiming to achieve better thermal conductivity. A thermoelectric cooler was employed to control the heatsink temperature, which was 20 °C in our experiment. A three-mirror folded cavity was used to study the output characteristics of the Ho:GTO laser under the CW and Q-switching regimes. The input flat mirror M1 was coated with high transmission (∼98%) for the pump wavelength and with high reflectivity (∼99.8%) for the laser wavelength. The 45° dichroic mirror M2 was flat with high transmission (∼94%) for the pump wavelength and high reflectivity (∼99.8%) for the laser wavelength with any polarizations. The output coupler M3 was a plano-concave mirror. Three curvatures of R=200 mm, 300 mm, and 500 mm were used in this work. With the ABCD matrix method, we calculated that this cavity can endure a thermal focal length above 45 mm from Ho:GTO crystal. For the Q-switching mode, a water-cooled AO Q-switch (SGQ41-2000-2QB, CETC) was inserted into the laser cavity, which was driven by a radiofrequency (RF) driver with an RF power of 50 W at 41 MHz, resulting in more than 80% loss of modulation.

 figure: Fig. 1.

Fig. 1. Experimental setup of CW and AO Q-switched Ho:GTO laser

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3. Experimental results

3.1 High-efficiency CW operation

First, without an AO Q-switch, the physical cavity length was 67 mm. We investigated the output characteristics of a highly efficient Ho:GTO laser under the CW regime. Five output couplers with different parameters were used in this experiment, as shown in Fig. 2(a). With the same transmittance of 30%, three curvatures of R=200 mm, 300 mm, and 500 mm were employed. Clearly, the output power and slope efficiency improved with the increase in the curvature of the output coupler. The same phenomenon was also observed in the case with a transmittance of 40%. In the case of T=40% and R=500 mm, the Ho:GTO laser achieved the best output performance, corresponding to a maximum output power of 30.5 W under 51.4 W of absorbed pump power, when the slope efficiency was 74.9% with respect to the absorbed pump power. According to the ABCD matrix method, the resonant beam radii in the laser crystal were calculated to be 0.24 mm, 0.27 mm, and 0.31 mm, corresponding to R=200 mm, 300 mm, and 500 mm, respectively. For this experiment, the overlap efficiency between the pump and the resonant beam can be evaluated by the ratio between them because the pump Rayleigh length is much longer than the crystal length. The ratios between the resonant and pump beam were 0.69, 0.77, and 0.89 for R=200 mm, 300 mm, and 500 mm, respectively, indicating that the overlap efficiency was the best with R=500 mm in this experiment, which means that the Ho:GTO laser worked in the best condition in our experiment. In addition, the polarization state of Ho:GTO laser beam was linear verified by a Glan-Taylor prism. Compared with well-known Ho:YLF, Ho:LLF and Ho:YAG lasers, the output power of new-type Ho:GTO laser was lower, but its slope efficiency was acceptable. Actually, the optical quality of Ho:GTO crystal is not perfect because of immature growth techniques. We believe that the output characteristics of Ho:GTO laser could be increased with improving of crystal quality.

 figure: Fig. 2.

Fig. 2. Output powers and spectra of Ho:GTO laser under CW regime

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The output spectrum of the Ho:GTO laser was recorded using a wavemeter (Bristol 721A). Only the oscillation line was recorded for all output couplers, and it was centered at approximately 2068.8 nm, as shown in Fig. 2(b). In addition, the 2D and 3D far-field beam intensity distributions of the Ho:GTO laser were recorded by a camera (Spiricon Pyrocam III) under output powers of 5 W, 10 W, 20 W, and 30 W, as shown in Fig. 3, verifying the TEM00 propagation. With the most efficient output coupler, the M2 factor of the Ho:GTO laser was measured using the 90/10 knife-edge method. A focal lens with a 150-mm focal length was employed to transform the output beam. The beam radii were measured at different positions along the beam propagation direction, as shown in Fig. 4. The beam parameter was achieved by fitting the measured data. Then, the M2 factor was calculated to be 1.5 at the maximum output power. This result is like to other Ho lasers such as Ho:YAG, Ho:YLF and Ho:YAP.

 figure: Fig. 3.

Fig. 3. Far-field beam profiles of Ho:GTO laser with different output levels

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 figure: Fig. 4.

Fig. 4. The M2 factor measurement of Ho:GTO laser at maximum output power

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3.2 Acousto-optical Q-switching regime

To achieve the Q-switching output, we inserted an AO Q-switch between M2 and M3, which extended the physical cavity length to 110 mm. Employing the most efficient output coupler (T=40%, R=500 mm), we obtained the output characteristics of the Ho:GTO laser and these are shown in Fig. 5(a). After the RF driver was shut down, at an absorbed pump power of 51.4 W, the Ho:GTO laser yielded an output power of 26.5 W and a slope efficiency of 70.7%. Under the Q-switching regime, the Q-switching performance of the Ho:GTO laser was investigated with PRFs of 10 kHz, 20 kHz, and 30 kHz. A maximum average output power of 25.9 W and a slope efficiency of 69.1% were obtained at a PRF of 30 kHz. With the decrease in PRF to 20 kHz and 10 kHz, the slope efficiencies were reduced to 65.9% and 63.4%, respectively, corresponding to average output powers of 24.8 W and 23.5 W, respectively. In addition, the polarization state of Q-switched Ho:GTO laser was same as CW operation.

 figure: Fig. 5.

Fig. 5. The output characteristics of AO Q-switched Ho:GTO laser

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An InGaAs photodetector (ET-5000, EOT) connected to a digital oscilloscope (DPO4000, Tektronix) was employed to record the pulse profiles of the AO Q-switched Ho:GTO laser. Figure 5(b), 5(c), and 5(d) shows the pulse energies, pulse widths, and peak powers of the AO Q-switched Ho:GTO laser under PRFs of 10 kHz, 20 kHz, and 30 kHz, respectively. Maximum pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ were achieved. The average minimum pulse widths of 18 ns, 23 ns, and 26 ns were recorded (Fig. 6), corresponding to calculated maximum peak powers of approximately 133.3 kW, 52.2 kW, and 34.6 kW, respectively, for the above three PRFs. Table 1 summarizes the representative works on tantalate lasers (Nd- or Ho-doping only at present). Clearly, our work realized the highest output power and slope efficiency in tantalate lasers.

 figure: Fig. 6.

Fig. 6. The minimum pulse widths of AO Q-switched Ho:GTO laser with PRFs of 10 kHz, 20 kHz and 30 kHz

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Tables Icon

Table 1. Comparison of output characteristics of tantalite lasers

Where λp is the pump wavelength, λl is the lasing wavelength, Pout is the maximum output power, ηs is the slope efficiency, PQS is the passive Q-switching, ML is the mode-locking, SLM is the single-longitudinal-mode, * with respect to absorbed pump power.

4. Conclusions

In summary, the AO Q-switched performance of a Tm-fiber-pumped Ho:GTO laser was demonstrated. In the high-efficiency CW regime, the Ho:GTO laser produced 30.5 W of output power at 2068.8nm, corresponding to a slope efficiency of 74.9% with respect to the absorbed pump power. In the AO Q-switching regime, the Ho:GTO laser produced pulse energies of 2.4 mJ, 1.2 mJ, and 0.9 mJ at PRFs of 10 kHz, 20 kHz, and 30 kHz, respectively. Minimum pulse widths of 18ns, 23ns, and 26ns were obtained, resulting in calculated maximum peak powers of approximately 133.3kW, 52.2kW, and 34.6kW, respectively. The AO Q-switched Ho:GTO laser is a good choice to replace the Ho:YAG or Ho:YLF laser, which is used to pump the mid-IR optical parametric oscillator. In addition, with an output wavelength of 2.07 µm, the Ho:GTO laser could be applied to gas detection or materials processing.

Funding

National Natural Science Foundation of China (51802307).

Disclosures

The authors declare no conflicts of interest.

References

1. S. W. Henderson, C. P. Hale, J. R. Magee, M. J. Kavaya, and A. V. Huffaker, “Eye-safe coherent laser radar system at 2.1 µm using Tm,Ho:YAG lasers,” Opt. Lett. 16(10), 773–775 (1991). [CrossRef]  

2. M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020). [CrossRef]  

3. K. Mizutani, S. Ishii, M. Aoki, H. Iwai, R. Otsuka, H. Fukuoka, T. Isikawa, and A. Sato, “2 µm Doppler wind lidar with a Tm:fiber-laser-pumped Ho:YLF laser,” Opt. Lett. 43(2), 202–205 (2018). [CrossRef]  

4. P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000). [CrossRef]  

5. X. Duan, B. Yao, G. Li, Y. Ju, Y. Wang, and G. Zhao, “High efficient actively Q-switched Ho:LuAG laser,” Opt. Express 17(24), 21691–21697 (2009). [CrossRef]  

6. X. Duan, B. Yao, X. Yang, L. Li, T. Wang, Y. Ju, Y. Wang, G. Zhao, and Q. Dong, “Room temperature efficient actively Q-switched Ho:YAP laser,” Opt. Express 17(6), 4427–4432 (2009). [CrossRef]  

7. G. Li, B. Yao, P. Meng, Y. Ju, and Y. Wang, “High-efficiency resonantly pumped room temperature Ho:YVO4 laser,” Opt. Lett. 36(15), 2934–2936 (2011). [CrossRef]  

8. B. Q. Yao, Y. Ding, X. M. Duan, T. Y. Dai, Y. L. Ju, L. J. Li, and W. J. He, “Efficient Q-switched Ho:GdVO4 laser resonantly pumped at 1942 nm,” Opt. Lett. 39(16), 4755–4757 (2014). [CrossRef]  

9. B. Q. Yao, Z. Cui, X. M. Duan, Y. Q. Du, L. Han, and Y. J. Shen, “Resonantly pumped room temperature Ho:LuVO4 laser,” Opt. Lett. 39(21), 6328–6330 (2014). [CrossRef]  

10. Y. Xue, N. Li, Q. Song, X. Xu, X. Yang, T. Dai, D. Wang, Q. Wang, D. Li, Z. Wang, and J. Xu, “Spectral properties and laser performance of Ho:CNGG crystals grown by the micro-pulling-down method,” Opt. Mater. Express 9(6), 2490–2496 (2019). [CrossRef]  

11. X. Duan, C. Qian, Y. Shen, L. Su, L. Zheng, L. Li, B. Yao, and T. Dai, “Efficient Ho:(Sc0.5Y0.5)2SiO5 laser at 2.1 µm in-band pumped by Tm fiber laser,” Opt. Express 27(4), 4522–4527 (2019). [CrossRef]  

12. A. Dergachev and P. F. Moulton, “High-Power, High-Energy Diode-Pumped Tm: YLF-Ho:YLF-ZGP Laser System,” in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 137.

13. J. W. Kim, J. I. Mackenzie, D. Parisi, S. Veronesi, M. Tonelli, and W. A. Clarkson, “Efficient in-band pumped Ho:LuLiF4 2 µm laser,” Opt. Lett. 35(3), 420–422 (2010). [CrossRef]  

14. M. Schellhorn, D. Parisi, M. Eichhorn, and M. Tonelli, “Continuous-wave and Q-switched operation of a resonantly pumped Ho3+:KY3F10 laser,” Opt. Lett. 39(5), 1193–1196 (2014). [CrossRef]  

15. M. Němec, J. Šulc, M. Jelínek, V. Kubeček, H. Jelínková, M. E. Doroshenko, O. K. Alimov, V. A. Konyushkin, A. N. Nakladov, and V. V. Osiko, “Thulium fiber pumped tunable Ho:CaF2 laser,” Opt. Lett. 42(9), 1852–1855 (2017). [CrossRef]  

16. V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011). [CrossRef]  

17. V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011). [CrossRef]  

18. M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017). [CrossRef]  

19. X. Duan, Y. Shen, Z. Zhang, L. Su, and T. Dai, “A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser,” Infrared Phys. Technol. 103, 103071 (2019). [CrossRef]  

20. G. Blasse and A. Bril, “Luminescence phenomena in compounds with fergusonite structure,” J. Lumin. 3(2), 109–131 (1970). [CrossRef]  

21. M. J. J. Lammers and G. Blasse, “Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4),” Mater. Res. Bull. 19(6), 759–768 (1984). [CrossRef]  

22. M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006). [CrossRef]  

23. F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015). [CrossRef]  

24. B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015). [CrossRef]  

25. R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/24I9/2 and 4F3/24I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020). [CrossRef]  

26. R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020). [CrossRef]  

27. R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020). [CrossRef]  

28. X. Duan, G. Chen, C. Qian, Y. Shen, R. Dou, Q. Zhang, L. Li, and T. Dai, “Resonantly pumped high efficiency Ho:GdTaO4 laser,” Opt. Express 27(13), 18273–18281 (2019). [CrossRef]  

29. T. Dai, S. Guo, X. Duan, R. Dou, and Q. Zhang, “High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm,” Opt. Express 27(23), 34204–34210 (2019). [CrossRef]  

References

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  1. S. W. Henderson, C. P. Hale, J. R. Magee, M. J. Kavaya, and A. V. Huffaker, “Eye-safe coherent laser radar system at 2.1 µm using Tm,Ho:YAG lasers,” Opt. Lett. 16(10), 773–775 (1991).
    [Crossref]
  2. M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
    [Crossref]
  3. K. Mizutani, S. Ishii, M. Aoki, H. Iwai, R. Otsuka, H. Fukuoka, T. Isikawa, and A. Sato, “2  µm Doppler wind lidar with a Tm:fiber-laser-pumped Ho:YLF laser,” Opt. Lett. 43(2), 202–205 (2018).
    [Crossref]
  4. P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
    [Crossref]
  5. X. Duan, B. Yao, G. Li, Y. Ju, Y. Wang, and G. Zhao, “High efficient actively Q-switched Ho:LuAG laser,” Opt. Express 17(24), 21691–21697 (2009).
    [Crossref]
  6. X. Duan, B. Yao, X. Yang, L. Li, T. Wang, Y. Ju, Y. Wang, G. Zhao, and Q. Dong, “Room temperature efficient actively Q-switched Ho:YAP laser,” Opt. Express 17(6), 4427–4432 (2009).
    [Crossref]
  7. G. Li, B. Yao, P. Meng, Y. Ju, and Y. Wang, “High-efficiency resonantly pumped room temperature Ho:YVO4 laser,” Opt. Lett. 36(15), 2934–2936 (2011).
    [Crossref]
  8. B. Q. Yao, Y. Ding, X. M. Duan, T. Y. Dai, Y. L. Ju, L. J. Li, and W. J. He, “Efficient Q-switched Ho:GdVO4 laser resonantly pumped at 1942  nm,” Opt. Lett. 39(16), 4755–4757 (2014).
    [Crossref]
  9. B. Q. Yao, Z. Cui, X. M. Duan, Y. Q. Du, L. Han, and Y. J. Shen, “Resonantly pumped room temperature Ho:LuVO4 laser,” Opt. Lett. 39(21), 6328–6330 (2014).
    [Crossref]
  10. Y. Xue, N. Li, Q. Song, X. Xu, X. Yang, T. Dai, D. Wang, Q. Wang, D. Li, Z. Wang, and J. Xu, “Spectral properties and laser performance of Ho:CNGG crystals grown by the micro-pulling-down method,” Opt. Mater. Express 9(6), 2490–2496 (2019).
    [Crossref]
  11. X. Duan, C. Qian, Y. Shen, L. Su, L. Zheng, L. Li, B. Yao, and T. Dai, “Efficient Ho:(Sc0.5Y0.5)2SiO5 laser at 2.1 µm in-band pumped by Tm fiber laser,” Opt. Express 27(4), 4522–4527 (2019).
    [Crossref]
  12. A. Dergachev and P. F. Moulton, “High-Power, High-Energy Diode-Pumped Tm: YLF-Ho:YLF-ZGP Laser System,” in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 137.
  13. J. W. Kim, J. I. Mackenzie, D. Parisi, S. Veronesi, M. Tonelli, and W. A. Clarkson, “Efficient in-band pumped Ho:LuLiF4 2 µm laser,” Opt. Lett. 35(3), 420–422 (2010).
    [Crossref]
  14. M. Schellhorn, D. Parisi, M. Eichhorn, and M. Tonelli, “Continuous-wave and Q-switched operation of a resonantly pumped Ho3+:KY3F10 laser,” Opt. Lett. 39(5), 1193–1196 (2014).
    [Crossref]
  15. M. Němec, J. Šulc, M. Jelínek, V. Kubeček, H. Jelínková, M. E. Doroshenko, O. K. Alimov, V. A. Konyushkin, A. N. Nakladov, and V. V. Osiko, “Thulium fiber pumped tunable Ho:CaF2 laser,” Opt. Lett. 42(9), 1852–1855 (2017).
    [Crossref]
  16. V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
    [Crossref]
  17. V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
    [Crossref]
  18. M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
    [Crossref]
  19. X. Duan, Y. Shen, Z. Zhang, L. Su, and T. Dai, “A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser,” Infrared Phys. Technol. 103, 103071 (2019).
    [Crossref]
  20. G. Blasse and A. Bril, “Luminescence phenomena in compounds with fergusonite structure,” J. Lumin. 3(2), 109–131 (1970).
    [Crossref]
  21. M. J. J. Lammers and G. Blasse, “Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4),” Mater. Res. Bull. 19(6), 759–768 (1984).
    [Crossref]
  22. M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
    [Crossref]
  23. F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
    [Crossref]
  24. B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
    [Crossref]
  25. R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
    [Crossref]
  26. R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
    [Crossref]
  27. R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
    [Crossref]
  28. X. Duan, G. Chen, C. Qian, Y. Shen, R. Dou, Q. Zhang, L. Li, and T. Dai, “Resonantly pumped high efficiency Ho:GdTaO4 laser,” Opt. Express 27(13), 18273–18281 (2019).
    [Crossref]
  29. T. Dai, S. Guo, X. Duan, R. Dou, and Q. Zhang, “High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm,” Opt. Express 27(23), 34204–34210 (2019).
    [Crossref]

2020 (4)

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

2019 (5)

2018 (1)

2017 (2)

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

M. Němec, J. Šulc, M. Jelínek, V. Kubeček, H. Jelínková, M. E. Doroshenko, O. K. Alimov, V. A. Konyushkin, A. N. Nakladov, and V. V. Osiko, “Thulium fiber pumped tunable Ho:CaF2 laser,” Opt. Lett. 42(9), 1852–1855 (2017).
[Crossref]

2015 (2)

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

2014 (3)

2011 (3)

2010 (1)

2009 (2)

2006 (1)

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

2000 (1)

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
[Crossref]

1991 (1)

1984 (1)

M. J. J. Lammers and G. Blasse, “Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4),” Mater. Res. Bull. 19(6), 759–768 (1984).
[Crossref]

1970 (1)

G. Blasse and A. Bril, “Luminescence phenomena in compounds with fergusonite structure,” J. Lumin. 3(2), 109–131 (1970).
[Crossref]

Abdusalamov, A.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Aguiló, M.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

Alekseeva, T.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Ali, S.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Alimov, O. K.

Aoki, M.

Blasse, G.

M. J. J. Lammers and G. Blasse, “Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4),” Mater. Res. Bull. 19(6), 759–768 (1984).
[Crossref]

G. Blasse and A. Bril, “Luminescence phenomena in compounds with fergusonite structure,” J. Lumin. 3(2), 109–131 (1970).
[Crossref]

Bril, A.

G. Blasse and A. Bril, “Luminescence phenomena in compounds with fergusonite structure,” J. Lumin. 3(2), 109–131 (1970).
[Crossref]

Budni, P. A.

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
[Crossref]

Carvajal, J. J.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

Chen, G.

Chicklis, E. P.

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
[Crossref]

Clarkson, W. A.

Cui, Z.

Cvrcek, J.

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Dai, T.

Dai, T. Y.

Dergachev, A.

A. Dergachev and P. F. Moulton, “High-Power, High-Energy Diode-Pumped Tm: YLF-Ho:YLF-ZGP Laser System,” in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 137.

Díaz, F.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

Ding, Y.

Dong, Q.

Doroshenko, M. E.

Dou, R.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

X. Duan, G. Chen, C. Qian, Y. Shen, R. Dou, Q. Zhang, L. Li, and T. Dai, “Resonantly pumped high efficiency Ho:GdTaO4 laser,” Opt. Express 27(13), 18273–18281 (2019).
[Crossref]

T. Dai, S. Guo, X. Duan, R. Dou, and Q. Zhang, “High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm,” Opt. Express 27(23), 34204–34210 (2019).
[Crossref]

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Du, Y. Q.

Duan, X.

Duan, X. M.

Eichhorn, M.

Enikeev, D.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Fukuoka, H.

Gabdullina, S.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Gao, J.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

Gao, Y.

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Griebner, U.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

Gu, M.

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Guo, S.

Hale, C. P.

Han, L.

He, W. J.

Henderson, S. W.

Huffaker, A. V.

Ishii, S.

Isikawa, T.

Iwai, H.

Jambunathan, V.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

Jelínek, M.

Jelínek Jr, M.

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Jelínková, H.

Jiang, D.

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Jiang, Y.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

Ju, Y.

Ju, Y. L.

Kavaya, M. J.

Kim, J. W.

Konyushkin, V. A.

Kozlov, V.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Kubecek, V.

M. Němec, J. Šulc, M. Jelínek, V. Kubeček, H. Jelínková, M. E. Doroshenko, O. K. Alimov, V. A. Konyushkin, A. N. Nakladov, and V. V. Osiko, “Thulium fiber pumped tunable Ho:CaF2 laser,” Opt. Lett. 42(9), 1852–1855 (2017).
[Crossref]

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Lammers, M. J. J.

M. J. J. Lammers and G. Blasse, “Energy transfer phenomena in Tb3+-activated gadolinium tantalate (GdTaO4),” Mater. Res. Bull. 19(6), 759–768 (1984).
[Crossref]

Laukhtina, E.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Lemons, M. L.

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
[Crossref]

Li, D.

Li, G.

Li, L.

Li, L. J.

Li, N.

Li, X.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

Li, Y.

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

Liu, B.

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Liu, W.

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Liu, X.

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Liu, Y.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

Luo, J.

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Ma, W.

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Mackenzie, J. I.

Magee, J. R.

Mateos, X.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

Meng, P.

Mizutani, K.

Mosto, J. R.

P. A. Budni, M. L. Lemons, J. R. Mosto, and E. P. Chicklis, “High-power/high-brightness diode-pumped 1.9-µm thulium and resonantly pumped 2.1-µm holmium lasers,” IEEE J. Sel. Top. Quantum Electron. 6(4), 629–635 (2000).
[Crossref]

Moulton, P. F.

A. Dergachev and P. F. Moulton, “High-Power, High-Energy Diode-Pumped Tm: YLF-Ho:YLF-ZGP Laser System,” in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 137.

Nakladov, A. N.

Nemec, M.

Osiko, V. V.

Otsuka, R.

Parisi, D.

Peng, F.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Petrov, V.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

Pujol, M. C.

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, F. Díaz, M. Aguiló, U. Griebner, and V. Petrov, “Continuous-wave laser generation at ∼2.1 µm in Ho:KRE(WO4)2 (RE = Y, Gd, Lu) crystals: a comparative study,” Opt. Express 19(25), 25279–25289 (2011).
[Crossref]

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
[Crossref]

Qian, C.

Sato, A.

Schellhorn, M.

Shen, Y.

Shen, Y. J.

Singla, N.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Song, Q.

Y. Xue, N. Li, Q. Song, X. Xu, X. Yang, T. Dai, D. Wang, Q. Wang, D. Li, Z. Wang, and J. Xu, “Spectral properties and laser performance of Ho:CNGG crystals grown by the micro-pulling-down method,” Opt. Mater. Express 9(6), 2490–2496 (2019).
[Crossref]

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Su, L.

X. Duan, Y. Shen, Z. Zhang, L. Su, and T. Dai, “A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser,” Infrared Phys. Technol. 103, 103071 (2019).
[Crossref]

X. Duan, C. Qian, Y. Shen, L. Su, L. Zheng, L. Li, B. Yao, and T. Dai, “Efficient Ho:(Sc0.5Y0.5)2SiO5 laser at 2.1 µm in-band pumped by Tm fiber laser,” Opt. Express 27(4), 4522–4527 (2019).
[Crossref]

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Šulc, J.

Sun, D.

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Sun, G.

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Sun, T.

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

Taratkin, M.

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Tonelli, M.

Veronesi, S.

Wang, D.

Wang, G.

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Wang, M.

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Wang, Q.

Wang, R.

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

Wang, T.

Wang, W.

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Wang, Y.

Wang, Z.

Wu, X.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

Xiao, L.

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Xu, H.

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

Xu, J.

Xu, X.

Y. Xue, N. Li, Q. Song, X. Xu, X. Yang, T. Dai, D. Wang, Q. Wang, D. Li, Z. Wang, and J. Xu, “Spectral properties and laser performance of Ho:CNGG crystals grown by the micro-pulling-down method,” Opt. Mater. Express 9(6), 2490–2496 (2019).
[Crossref]

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Xue, Y.

Yan, R.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

Yang, H.

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Yang, X.

Yao, B.

Yao, B. Q.

Yao, W.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

Zhang, B.

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Zhang, L.

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

Zhang, Q.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

X. Duan, G. Chen, C. Qian, Y. Shen, R. Dou, Q. Zhang, L. Li, and T. Dai, “Resonantly pumped high efficiency Ho:GdTaO4 laser,” Opt. Express 27(13), 18273–18281 (2019).
[Crossref]

T. Dai, S. Guo, X. Duan, R. Dou, and Q. Zhang, “High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm,” Opt. Express 27(23), 34204–34210 (2019).
[Crossref]

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Zhang, R.

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
[Crossref]

Zhang, Z.

X. Duan, Y. Shen, Z. Zhang, L. Su, and T. Dai, “A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser,” Infrared Phys. Technol. 103, 103071 (2019).
[Crossref]

Zhao, B.

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

Zhao, G.

Zheng, L.

Zhou, Y.

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

Appl. Phys. B (1)

F. Peng, H. Yang, Q. Zhang, J. Luo, W. Liu, D. Sun, R. Dou, and G. Sun, “Spectroscopic properties and laser performance at 1,066 nm of a new laser crystal Nd:GdTaO4,” Appl. Phys. B 118(4), 549–554 (2015).
[Crossref]

Appl. Phys. Express (1)

V. Jambunathan, X. Mateos, M. C. Pujol, J. J. Carvajal, M. Aguiló, F. Díaz, U. Griebner, and V. Petrov, “Diode-pumped Ho-doped KLu(WO4)2 laser at 2.08 µm,” Appl. Phys. Express 4(7), 072601 (2011).
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X. Duan, Y. Shen, Z. Zhang, L. Su, and T. Dai, “A passively Q-switching of diode-pumped 2.08-µm Ho:CaF2 laser,” Infrared Phys. Technol. 103, 103071 (2019).
[Crossref]

R. Wang, Y. Li, L. Zhang, and T. Sun, “Passively Q-switched mode-locked Nd:GdTaO4 laser by rhenium diselenide saturable absorber operated at 1066 nm,” Infrared Phys. Technol. 108, 103378 (2020).
[Crossref]

R. Yan, Y. Liu, X. Li, Y. Zhou, H. Xu, Y. Jiang, X. Wu, F. Peng, Q. Zhang, R. Dou, and J. Gao, “Harmonic mode locking underneath the Q-switched envelope in passively Q-switched mode-locked Nd:GdTaO4 1066 nm laser,” Infrared Phys. Technol. 111, 103553 (2020).
[Crossref]

J. Alloys Compd. (1)

M. Gu, L. Xiao, X. Liu, R. Zhang, B. Liu, and X. Xu, “Highly enhanced luminescence of GdTaO4:Eu3+ phosphors by codoping with Zn2+ ions,” J. Alloys Compd. 426(1-2), 390–394 (2006).
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Opt. Eng. (1)

B. Zhang, Q. Song, G. Wang, Y. Gao, Q. Zhang, M. Wang, and W. Wang, “Passively Q-switched Nd:GdTaO4 laser by graphene oxide saturable absorber,” Opt. Eng. 55(8), 081305 (2015).
[Crossref]

Opt. Express (6)

Opt. Laser Technol. (1)

R. Yan, Y. Zhou, X. Li, Y. Liu, Y. Jiang, W. Yao, F. Peng, Q. Zhang, R. Dou, and J. Gao, “4F3/2→4I9/2 and 4F3/2→4I13/2 laser operations with a Nd:GdTaO4 crystal,” Opt. Laser Technol. 131, 106444 (2020).
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Opt. Lett. (8)

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B. Q. Yao, Y. Ding, X. M. Duan, T. Y. Dai, Y. L. Ju, L. J. Li, and W. J. He, “Efficient Q-switched Ho:GdVO4 laser resonantly pumped at 1942  nm,” Opt. Lett. 39(16), 4755–4757 (2014).
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B. Q. Yao, Z. Cui, X. M. Duan, Y. Q. Du, L. Han, and Y. J. Shen, “Resonantly pumped room temperature Ho:LuVO4 laser,” Opt. Lett. 39(21), 6328–6330 (2014).
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J. W. Kim, J. I. Mackenzie, D. Parisi, S. Veronesi, M. Tonelli, and W. A. Clarkson, “Efficient in-band pumped Ho:LuLiF4 2 µm laser,” Opt. Lett. 35(3), 420–422 (2010).
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M. Schellhorn, D. Parisi, M. Eichhorn, and M. Tonelli, “Continuous-wave and Q-switched operation of a resonantly pumped Ho3+:KY3F10 laser,” Opt. Lett. 39(5), 1193–1196 (2014).
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M. Němec, J. Šulc, M. Jelínek, V. Kubeček, H. Jelínková, M. E. Doroshenko, O. K. Alimov, V. A. Konyushkin, A. N. Nakladov, and V. V. Osiko, “Thulium fiber pumped tunable Ho:CaF2 laser,” Opt. Lett. 42(9), 1852–1855 (2017).
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Opt. Mater. Express (1)

Proc. SPIE (1)

M. Jelínek Jr, J. Cvrček, V. Kubeček, B. Zhao, W. Ma, D. Jiang, and L. Su, “Room temperature CW and QCW operation of Ho:CaF2 laser pumped by Tm:fiber laser,” Proc. SPIE 10238, 1023819 (2017).
[Crossref]

World J. Urol. (1)

M. Taratkin, E. Laukhtina, N. Singla, V. Kozlov, A. Abdusalamov, S. Ali, S. Gabdullina, T. Alekseeva, and D. Enikeev, “Temperature changes during laser lithotripsy with Ho:YAG laser and novel Tm-fiber laser: a comparative in-vitro study,” World J. Urol. 38(12), 3261–3266 (2020).
[Crossref]

Other (1)

A. Dergachev and P. F. Moulton, “High-Power, High-Energy Diode-Pumped Tm: YLF-Ho:YLF-ZGP Laser System,” in Advanced Solid-State Photonics, J. Zayhowski, ed., Vol. 83 of OSA Trends in Optics and Photonics (Optical Society of America, 2003), paper 137.

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Figures (6)

Fig. 1.
Fig. 1. Experimental setup of CW and AO Q-switched Ho:GTO laser
Fig. 2.
Fig. 2. Output powers and spectra of Ho:GTO laser under CW regime
Fig. 3.
Fig. 3. Far-field beam profiles of Ho:GTO laser with different output levels
Fig. 4.
Fig. 4. The M2 factor measurement of Ho:GTO laser at maximum output power
Fig. 5.
Fig. 5. The output characteristics of AO Q-switched Ho:GTO laser
Fig. 6.
Fig. 6. The minimum pulse widths of AO Q-switched Ho:GTO laser with PRFs of 10 kHz, 20 kHz and 30 kHz

Tables (1)

Tables Icon

Table 1. Comparison of output characteristics of tantalite lasers

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