Tarasov Aleksandr, Chu Hong
Opt Express. 2019 Feb 4;27(3):3574-3582. doi: 10.1364/OE.27.003574.
We realized the generation of pulses with a 460 ps duration, 1% pulse duration stability, and 300 mJ pulsed energy in a gain-switched Ti: Sapphire laser. We show that a flattening of the pumping beam profile and an increase of pump fluence up to the threshold of second pulse generation are the main conditions to achieve pulses with minimum duration and maximum stability. The negative influence of pump nonuniformity on laser characteristics was also studied. The maximum pulse energy was restricted by available pump energy of the nanosecond Q-switched Nd: YAG laser.
我们在增益开关钛宝石激光器中实现了脉宽为460皮秒、脉冲持续时间稳定性为1%、脉冲能量为300毫焦的脉冲产生。我们表明，泵浦光束轮廓的平坦化以及泵浦通量增加到二次脉冲产生阈值是实现具有最短持续时间和最大稳定性脉冲的主要条件。还研究了泵浦不均匀性对激光特性的负面影响。最大脉冲能量受到纳秒调Q钕：钇铝石榴石激光器可用泵浦能量的限制。
