中国激光, 2011, 38 (4): 0402005, 网络出版: 2011-04-02   

La3Ga5SiO14晶体电光调Q高重复频率瓦级紫外激光器

Watt-Level High-Repetition Rate Ultraviolet Laser with La3Ga5SiO14 Electro-Optic Q-Switch
作者单位
中国科学院上海光学精密机械研究所上海市全固态激光器与应用技术重点实验室, 上海 201800
摘要
报道了一台激光二极管(LD)双端面抽运NdYVO4晶体腔内三倍频355 nm紫外激光器。采用La3Ga5SiO14(LGS)高重复频率电光调Q技术,U型平凹腔结构设计,在腔内用I类相位匹配的LiB3O5(LBO)晶体实现二倍频,Ⅱ类相位匹配的LBO晶体实现三倍频,获得了高效率、高峰值功率、高重复频率的355 nm紫外激光脉冲输出。在抽运功率20.4 W及电光调Q重复频率10 kHz的工作条件下,获得脉宽9.6 ns,平均输出功率1.29 W的紫外激光输出,光光转换效率约为6.3%。
Abstract
A laser diode(LD) dual-end-pumped electro-optic Q-switched NdYVO4 solid-state ultraviolet laser is reported by using a U flat-concave resonator, with type I phase-matched LiB3O5(LBO) as the second harmonic generation crystal and type II phase-matched LBO as the third harmonic generation crystal. A block of La3Ga5SiO14(LGS) crystal is used as a Q-switch. The 1.29 W output power of 355 nm is obtained at the pump power of 20.4 W and repetition frequency of 10 kHz with pulse width as short as 9.6 ns. The optical-optical transformation efficiency is about 6.3%.
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陆婷婷, 李小莉, 臧华国, 朱小磊, 陆雨田. La3Ga5SiO14晶体电光调Q高重复频率瓦级紫外激光器[J]. 中国激光, 2011, 38(4): 0402005. Lu Tingting, Li Xiaoli, Zang Huaguo, Zhu Xiaolei, Lu Yutian. Watt-Level High-Repetition Rate Ultraviolet Laser with La3Ga5SiO14 Electro-Optic Q-Switch[J]. Chinese Journal of Lasers, 2011, 38(4): 0402005.

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