高功率半导体泵浦固体激光器输出特性的研究
Output characteristic of diode-side-pumped high power YAG laser
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摘要: 通过实验详细测量了水温、工作电流对二极管激光器发射波长的影响；采用光线追踪法模拟计算出在不同泵浦参数下半导体泵浦光在Nd:YAG棒内的分布情况，得到了圆周上泵浦模块的个数，泵浦光发散角等因素对泵浦光分布均匀性的影响。采用直接泵浦方式，分别设计了二种不同功率水平的半导体泵浦的Nd:YAG固体激光器聚光腔，得到了170和800 W的输出功率，并对激光器的输出特性进行详细测量，最大光-光转换效率达37%，电-光转换效率约为16%。
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关键词:
- 二极管泵浦固体激光器 /
- 高功率 /
- 谱线特性
Abstract: The shift coefficients of the central wavelength of diode laser under different cooling water temperature and operating current were measured. The gain distrubution in the Nd:YAG rod was theoretically studied using ray tracing program. Without the help of collimating lens, two kinds of diode-side-pumped modules were designed with different output power levels of 170 W and 800 W. The maximum optical to optical conversion efficiency is 37%. -
Key words:
- diode-pumped solid state laser /
- high power /
- spectrum characteristic
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