Pulse Characteristics of Quasi Continuous-Wave Pumped Yb:KYW/Cr4+:YAG Q-Switched Laser

被引：1
作者：
Zhang Nihui [1 ,2 ]
Yao Mingjie [1 ,2 ]
Ge Wenqi [1 ,2 ]
Zhang Hongbo [1 ,2 ]
机构：
[1] Chinese Acad Sci, Aerosp Informat Res Inst, Beijing 100094, Peoples R China
[2] Univ Chinese Acad Sci, Acad Optoelect, Beijing 100049, Peoples R China
来源：
LASER & OPTOELECTRONICS PROGRESS | 2023年 / 60卷 / 07期
关键词：
laser and laser optics; passively Q-switched; Yb:KYW; quasi-continuous; wave pump; pulse generation; pulse chain; YB-KYW LASER; REPETITION-RATE;
D O I：
10.3788/LOP220459
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A theoretical investigation of the influence of pump parameters of quasi-continuous-wave laser-diode (LD) pumped Yb:KYW/Cr4+:YAG laser on pulse characteristics based on passively Q-switched rate equations is presented. Through numerical calculation, the relationship between the characteristics of Q-switched pulse delay, pulse width, sub-pulse sequence, and pump rate is analyzed to obtain the optimal pump-light duty cycle and effectively reduce the thermal effect caused by continuous-wave pump. Furthermore, the high-repetition- rate LD pump source is used in the experiment, and the accurate locking and control of output characteristics such as repetition rate, pulse delay, and the number of pulse trains of the passively Q-switched laser are realized by adjusting the pump parameters. When the duty cycles of 15. 6-W pump power are 6. 5%, 8%, and 9. 65%, stable outputs of single pulse, double pulse, and triple pulse, respectively, are obtained, and the coupling resonance of pump pulse and laser pulse is improved. The experimental results are in agreement with the theoretical calculation.
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页数：8
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