Abstract

We report, for the first time to our knowledge, tunable continuous-wave laser action in the ${{\rm Tm}^{3 +}}{:}{\rm BaY}_2{\rm F}_8$ (BYF) crystal near 2.3 µm. In the experiments, a BYF crystal doped with 3 at. % thulium was end pumped with a narrow-linewidth, tunable ${{\rm Ti}^{3 +}}{:}{\rm sapphire}$ laser with up to 920 mW of incident power. Lasing was achieved for the two pump polarizations of ${E}//{x}$ and ${E}//{y}$. The best power performance was obtained in the case of ${E}//{x}$, double-end pumping, where 100 mW of output power was obtained at 2290 nm with 920 mW of pump power and 1% output coupler. The laser could be continuously tuned from 2233 to 2385 nm. Excitation spectra for ${E}//{x}$ and ${E}//{y}$ pumping were measured in the 760–810 nm range, and the optimum pumping wavelength was determined to be 779 nm for ${E}//{x}$. By using the lifetime and lasing threshold data, the stimulated emission cross section at 2290 nm was further determined to be $({0.66} \pm 0.06) \times {{10}^{- 24}}\;{{\rm m}^2}$.

© 2020 Optical Society of America

Graphene mode-locked operation of Tm³⁺:YLiF₄ and Tm³⁺:KY₃F₁₀ lasers near 2.3 µm

Abdullah Muti, Ferda Canbaz, Mauro Tonelli, Ji Eun Bae, Fabian Rotermund, Valentin Petrov, and Alphan Sennaroglu
Opt. Lett. 45(3) 656-659 (2020)

Upconversion pumping of a 2.3 µm Tm³⁺:KY₃F₁₀ laser with a 1064 nm ytterbium fiber laser

Yagız Morova, Mauro Tonelli, Valentin Petrov, and Alphan Sennaroglu
Opt. Lett. 45(4) 931-934 (2020)

Continuous-wave mid-infrared laser operation of Tm³⁺:KY₃F₁₀ at 2.3  μm

Abdullah Muti, Mauro Tonelli, Valentin Petrov, and Alphan Sennaroglu
Opt. Lett. 44(13) 3242-3245 (2019)

Broadly tunable continuous wave 2.3-µm Tm³⁺:tellurite bulk glass laser

Yagız Morova, Emir Ardalı, Boris Denker, Boris Galagan, Sergei Sverchkov, and Alphan Sennaroglu
Opt. Lett. 48(17) 4681-4684 (2023)

SWCNT-SA mode-locked Tm:LuYO₃ ceramic laser delivering 8-optical-cycle pulses at 2.05 µm

Yongguang Zhao, Li Wang, Yicheng Wang, Jian Zhang, Peng Liu, Xiaodong Xu, Ying Liu, Deyuan Shen, Ji Eun Bae, Tae Gwan Park, Fabian Rotermund, Xavier Mateos, Pavel Loiko, Zhengping Wang, Xingguang Xu, Jun Xu, Mark Mero, Uwe Griebner, Valentin Petrov, and Weidong Chen
Opt. Lett. 45(2) 459-462 (2020)