Chang C H, Yen K T, Li A L, Li Y R, Su K W
Opt Lett. 2023 Aug 1;48(15):3877-3880. doi: 10.1364/OL.496161.
An LED-side-pumped Nd:YAG/Cr:YAG passively Q-switched (PQS) laser containing an extracavity optical parametric oscillator (EOPO) is demonstrated. As far as we know, it is the first LED-pumped eye-safe laser. The Nd:YAG pump module is optimized to increase the PQS pulse energy to 24 mJ at 1064 nm. By using a single-pass EOPO design, the output energy of the signal pulse at 1573 nm is 7.44 mJ with a pulse width of 16 ns, the peak power is 434 kW, and the pump-to-signal conversion efficiency is 31%. For double-pass EOPO operation, the pump-to-signal conversion efficiency increases to 45.8%, the output energy of signal pulse is up to 10.98 mJ with a pulse width of 23.5 ns, and the peak power is 459 kW.
展示了一种包含腔外光学参量振荡器（EOPO）的LED侧面泵浦Nd:YAG/Cr:YAG被动调Q（PQS）激光器。据我们所知，这是第一台LED泵浦的人眼安全激光器。Nd:YAG泵浦模块经过优化，可将1064 nm处的PQS脉冲能量提高到24 mJ。通过采用单程EOPO设计，1573 nm处信号脉冲的输出能量为7.44 mJ，脉冲宽度为16 ns，峰值功率为434 kW，泵浦到信号的转换效率为31%。对于双程EOPO运行，泵浦到信号的转换效率提高到45.8%，信号脉冲的输出能量高达10.98 mJ，脉冲宽度为23.5 ns，峰值功率为459 kW。
