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Comparison on performances of continuous-wave and acousto-optically Q-switched Nd:GdYTaO4 lasers under 808nm and 879nm pumping
Infrared Physics & Technology ( IF 3.3 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.infrared.2020.103449
Xudong Li , Haobo Xu , Renpeng Yan , Yugang Jiang , Guichuan Xu , Fang Peng , Qingli Zhang , Renqin Dou , Jing Gao

Abstract This study investigated the laser performance of a Nd:GdYTaO4 crystal in continuous-wave and acousto-optically Q-switched operation. Laser performance comparison was conducted under 808 nm and 879 nm laser diode (LD) pumping. In continuous-wave operation, the maximum power at 1066 nm reached 4.4 W with an optical-to-optical efficiency of ~33.6% and the slope efficiency was ~35.9% under 808 nm laser diode pumping. In comparison, an output power of 7.7 W with an optical-to-optical efficiency of ~47.8% and a slope efficiency of ~48.3% were achieved in 879 nm LD pumped 1066 nm laser. Under 808 nm LD pumping, the Nd:GdYTaO4 crystal yielded an average output power of 1.1 W and a pulse width of 59.5 ns at the repetition rate of 30 kHz. By using direct pumping directly into the 4F3/2 emitting level, the average power was increased to 1.9 W and the pulse width was shortened to 33.0 ns at the repetition rate of 30 kHz.

中文翻译:

连续波和声光调Q Nd:GdYTaO4激光器在808nm和879nm泵浦下的性能比较

摘要 本研究研究了 Nd:GdYTaO4 晶体在连续波和声光调 Q 操作中的激光性能。激光性能比较是在 808 nm 和 879 nm 激光二极管 (LD) 泵浦下进行的。在连续波操作中,1066 nm 处的最大功率达到 4.4 W,光对光效率约为 33.6%,在 808 nm 激光二极管泵浦下斜率效率约为 35.9%。相比之下,在 879 nm LD 泵浦 1066 nm 激光器中实现了 7.7 W 的输出功率、~47.8% 的光对光效率和~48.3% 的斜率效率。在 808 nm LD 泵浦下,Nd:GdYTaO4 晶体在 30 kHz 的重复频率下产生 1.1 W 的平均输出功率和 59.5 ns 的脉冲宽度。通过使用直接泵浦直接进入 4F3/2 发射级,平均功率增加到 1。
更新日期:2020-11-01
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