A high pulse energy and high beam quality Nd:YAG laser system with extremely high brightness of 105 PW/sr $\cdot $ cm² is reported. The system is based on a master oscillator power amplifier scheme containing a Nd:YVO₄ mode-locked oscillator, laser diode end-pumped Nd:YAG regenerative amplifier, Ø6.35-mm double-pass amplifier, and two Ø15-mm double-pass amplifiers. Laser pulses with energy of 363 mJ and pulse duration of 63 ps were obtained at a repetition rate of 100 Hz, corresponding to a peak power of ~5.76 GW. A near-Gaussian beam with $M^{2} < 2.2$ and a narrow bandwidth with 0.17 nm were achieved, which make this laser system an attractive light source for ultra-remote laser ranging.

中文翻译：

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用于超远程激光测距的高亮度 100 Hz/363 mJ 皮秒 Nd:YAG 激光系统

具有 105 PW/sr 超高亮度的高脉冲能量和高光束质量 Nd:YAG 激光系统 $\cdot $ cm ²被报道。该系统基于主振荡器功率放大器方案，包含一个 Nd:YVO ₄锁模振荡器、激光二极管端部泵浦 Nd:YAG 再生放大器、Ø6.35-mm 双通放大器和两个 Ø15-mm 双通放大器。通过放大器。以 100 Hz 的重复频率获得能量为 363 mJ、脉冲持续时间为 63 ps 的激光脉冲，对应的峰值功率为 5.76 GW。近高斯光束 $M^{2} < 2.2$ 并且实现了 0.17 nm 的窄带宽，这使该激光系统成为用于超远程激光测距的有吸引力的光源。