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http://dx.doi.org/10.3807/COPP.2021.5.6.721

Experimental Investigation of a High-repetition-rate Pr3+:YLF Laser with Single-frequency Oscillation  

Dai, Weicheng (The Key Laboratory of Jilin Province Solid-State Laser Technology and Application, Changchun University of Science and Technology)
Jin, Long (The Key Laboratory of Jilin Province Solid-State Laser Technology and Application, Changchun University of Science and Technology)
Dong, Yuan (The Key Laboratory of Jilin Province Solid-State Laser Technology and Application, Changchun University of Science and Technology)
Jin, Guangyong (The Key Laboratory of Jilin Province Solid-State Laser Technology and Application, Changchun University of Science and Technology)
Publication Information
Current Optics and Photonics / v.5, no.6, 2021 , pp. 721-729 More about this Journal
Abstract
We demonstrate a Pr3+:YLF 639.7-nm laser with single-frequency output based on the Q-switched pre-lase technology, pumped by a fiber-coupled GaN blue laser diode. The pre-lase technology is realized by the step-type loss of the acousto-optical Q-switched device. The conclusions of the theoretical research are verified experimentally. The mode-suppression ratio was 44 dB at the single-frequency laser output. Detection by interferometer verified the realization of the stable single-frequency laser. In addition, the emission spectrum had a linewidth of 139.9 MHz, measured by Fabry-Perot interferometer. The single-frequency laser's single-peak power was over 19.7 W with 98.8-ns pulse duration, obtained under an absorption power of 1.74 W.
Keywords
$Pr^{3+}$:YLF; Pre-lase; Q-switched; Single-frequency;
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