We report on a cascade nanosecond CdSe optical parametric oscillator with an output energy of 0.54 mJ at 100 Hz, temperature tuning within 9245–9285 nm, and a narrow (∼6 cm−1) spectral width achieved by a volume Bragg grating acting on the first stage. The CdSe crystal is pumped intracavity by the signal wave from the PPKTP-based first stage, and both stages operate under noncritical phase-matching conditions. The simple, compact, and robust setup produced the highest overall conversion efficiency for an all-solid-state laser system based on CdSe with 1-μm pumping, and the corresponding quantum conversion efficiency exceeded 13%.

中文翻译：

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非关键、温度调节、窄带、腔内泵浦 CdSe OPO


我们报道了一种级联纳秒 CdSe 光学参量振荡器，在 100 Hz 时输出能量为 0.54 mJ，温度调谐在 9245-9285 nm 范围内，并通过作用在第一级的体布拉格光栅实现窄 （∼6 cm-1） 光谱宽度。CdSe 晶体由来自基于 PPKTP 的第一级的信号波泵送到腔内，并且两级都在非关键相位匹配条件下运行。简单、紧凑和稳健的设置为基于 CdSe 的全固态激光系统产生了最高的整体转换效率，具有 1 μm 泵浦，相应的量子转换效率超过 13%。