Infrared and Laser Engineering, Volume. 51, Issue 6, 20210601(2022)
4F3/2-4I11/2 transition spectra and high efficient laser operation of Nd:Y2O3 transparent ceramic
The fluorescence spectra and laser operation of Nd:Y2O3 transparent ceramic fabricated by the vacuum sintering plus hot isostatic pressing method were reported. By comparing with the fluorescence spectra of Nd:YAG transparent ceramics, it is shown that the 4F3/2-4I11/2 transition spectra of Nd:Y2O3 transparent ceramic have multiple spectral lines with similar gain, which is more beneficial to realize simultaneous dual-wavelength laser oscillation. The spectra discrete characteristic among different Stark transitions of Nd:Y2O3 transparent ceramic was beneficial to obtain abundant wavelength lasers around 1.0-1.1 μm through the cavity mirror coating to control the loss of different wavelengths. Furthermore, a simple plane-plane cavity was used, and the output coupler with reasonable coating design was selected for different wavelength laser output. The maximum output power of 3.62 W and the conversion efficiency of 40.4% were obtained for the 1074.6 nm and 1078.8 nm dual-wavelength laser output. The output power of 1.7 W and the conversion efficiency of 19.4% were achieved for 1130.3 nm laser output.
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Senhao Lou, Yunmi Huang, Jun Wang, Yanmin Duan, Dingyuan Tang, Haiyong Zhu. 4F3/2-4I11/2 transition spectra and high efficient laser operation of Nd:Y2O3 transparent ceramic[J]. Infrared and Laser Engineering, 2022, 51(6): 20210601
Category: Lasers & Laser optics
Received: Aug. 24, 2021
Accepted: Nov. 4, 2021
Published Online: Dec. 20, 2022
The Author Email: Huang Yunmi (huangym@wzu.edu.cn)