Zhao Hui, Dai Shibo, Wang Yisen, Li Keyin, Li Yongyao, Li Zhen, Chen Zhenqiang
Opt Express. 2025 Feb 24;33(4):8347-8355. doi: 10.1364/OE.554641.
We demonstrated a high-peak-power nanosecond pulsed Nd:YLF dual-crystal-based red laser by intracavity frequency-doubling with a type-I critical phase-matched BIBO crystal. With the aid of the elaborately designed L-shaped resonator and the linearly polarized pump, excellent mode matching and high pump absorption efficiency have been substantiated. Under the incident pump power of 82.7 W, laser emission at 657 nm was realized with the maximum output power of 6.3 W at a repetition rate of 4 kHz. And the average beam quality factor was detected to be = 1.68. The pulse energy was scaled up to 3.45 mJ at the repetition rate of 1 kHz, corresponding to a pulse duration of 45 ns and a peak power of up to 77 kW. Additionally, the wavelength could be tuned from 656.3 nm to 657.1 nm after inserting an etalon, with the spectral linewidth all less than 0.05 nm.
我们通过使用 I 型临界相位匹配的 BIBO 晶体进行腔内倍频，展示了一种基于高峰值功率纳秒脉冲 Nd:YLF 双晶体的红色激光器。借助精心设计的 L 形谐振器和线偏振泵浦，实现了出色的模式匹配和高泵浦吸收效率。在 82.7 W 的入射泵浦功率下，实现了 657 nm 的激光发射，在 4 kHz 的重复频率下最大输出功率为 6.3 W。检测到平均光束质量因子为 = 1.68。在 1 kHz 的重复频率下，脉冲能量放大到 3.45 mJ，对应脉冲持续时间为 45 ns，峰值功率高达 77 kW。此外，插入标准具后，波长可从 656.3 nm 调谐到 657.1 nm，谱线宽度均小于 0.05 nm。
