Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
About All Issues Feature Issues

Dy-doped CaF2 transparent ceramics as a functional medium in the broadband mid-infrared spectral region

Hiyori Uehara, Weichao Yao, Akio Ikesue, Hiroyuki Noto, Hengjun Chen, Yoshimitsu Hishinuma, Takeo Muroga, and Ryo Yasuhara

Open Access Open Access

Abstract

Highly transparent Dy:CaF2 ceramics with various doping concentrations were fabricated by a hot isostatic pressing (HIP). Their optical properties, emission cross-sections, and saturable absorptivities were evaluated to examine their use as a new candidate 3-μm laser functional medium. Based on those evaluations, we demonstrated passively Q-switched operation of a 2.92-μm Er:YAP laser using a Dy:CaF2 ceramic as a saturable absorber.

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Full Article  |  PDF Article
More Like This
Dy-doped Y2O3 transparent ceramics as a mid-infrared laser medium and saturable absorber

Ryo Yasuhara, Hiyori Uehara, Weichao Yao, Hengjun Chen, Shigeki Tokita, and Hiroaki Furuse
Opt. Mater. Express 10(11) 2998-3006 (2020)

White light generation in Dy3+-doped oxyfluoride glass and transparent glass-ceramics containing CaF2 nanocrystals

P. Babu, Kyoung Hyuk Jang, Ch. Srinivasa Rao, Liang Shi, C. K. Jayasankar, Víctor Lavín, and Hyo Jin Seo
Opt. Express 19(3) 1836-1841 (2011)

Mid-infrared emission in Dy:YAlO3 crystal

Yan Wang, Jianfu Li, Zhaojie Zhu, Zhenyu You, Jinlong Xu, and Chaoyang Tu
Opt. Mater. Express 4(6) 1104-1111 (2014)

View More...

Cited By

Optica participates in Crossref's Cited-By Linking service. Citing articles from Optica Publishing Group journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (8)
Fig. 1.
Fig. 1. (a) Transmission spectra and a photograph of the Dy:CaF2 ceramics with various doping concentrations. Dotted line indicates the predicted maximum transmittance of undoped CaF2 crystal.

Download Full Size | PDF

Fig. 2.
Fig. 2. Absorption (solid line) and scattering (dotted line) coefficient spectra of Dy:CaF2 ceramics with various doping concentrations.

Download Full Size | PDF

Fig. 3.
Fig. 3. (a) Emission cross-sections for Dy:CaF2 ceramics excited by a 1700-nm laser diode. The absorption cross-section of the 3-at.% sample is plotted as a dashed line. (b) Emission spectrum with 2800-nm excitation measured using a 3100-nm long-pass filter.

Download Full Size | PDF

Fig. 4.
Fig. 4. Gain cross-section spectra of 6H13/2 → 6H15/2 transition for 3 at. % Dy:CaF2 ceramics with the population inversion P ranging from 0 to 1 in interval of 0.1.

Download Full Size | PDF

Fig. 5.
Fig. 5. Nonlinear transmission of 0.5-at.% Dy:CaF2 ceramic measured by a cw Er:YAP laser at 2920 nm wavelength. Fresnel reflection losses are removed in the plots and a fitting curve is shown as a red line.

Download Full Size | PDF

Fig. 6.
Fig. 6. Schematic diagram of the setup for a passively Q-switched Er:YAP laser using a Dy:CaF2 ceramic as a saturable absorber.

Download Full Size | PDF

Fig. 7.
Fig. 7. (a) Typical output temporal waveform for a Q-switched Er:YAP laser with a Dy:CaF2 ceramic SA under 11.7-W pumping. (b) Temporal waveform of a pulse in the pulse train.

Download Full Size | PDF

Fig. 8.
Fig. 8. Pulse duration and repetition rate for Dy:CaF2 Q-switched Er:YAP laser as a function of pump power.

Download Full Size | PDF

Select as filters
Select Topics Cancel
Top
       
© Copyright 2024 | Optica Publishing Group. All rights reserved, including rights for text and data mining and training of artificial technologies or similar technologies.
Privacy | Terms of Use