高功率全固态连续单频1342 nm Nd∶GdVO<sub>4</sub>激光器的设计及实现

为提高1342 nm 波段全固态连续单频Nd∶GdVO₄红外激光器的输出功率，本文选用复合式Nd∶GdVO₄ 晶体为激光介质，并对其相关参数进行优化，以提高激光输出功率。研究表明，热致衍射损耗正比于激光介质横截面尺寸，热损伤阈值抽运功率随横截面尺寸的减小而增加。通过环形腔选模的方法实现激光器单频运转，并选用横截面尺寸较小的激光晶体。实验证明，1342 nm 激光最大输出功率为3.1 W，较前期激光器输出功率提高30%。

Abstract

To scale the output power of all- solid- state continuous- wave Nd∶GdVO₄ laser of single- frequency operation at 1342 nm, the composite Nd∶GdVO₄ laser crystal is used as laser medium, and its relevant parameter is optimized. The theoretical calculation shows that the thermally induced diffraction losses is proportional to the cross- section dimension of laser medium, and the pump power of thermal fracture limit is the decreasing function of it. A ring laser resonator is designed to make the laser single-frequency operation. The experimental result shows that the maximum output power is 3.1 W, and the conversion efficiency increases by 30%.

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王垚廷, 张瑞红, 李武军. 高功率全固态连续单频1342 nm Nd∶GdVO₄激光器的设计及实现[J]. 激光与光电子学进展, 2015, 52(11): 111402. Wang Yaoting, Zhang Ruihong, Li Wujun. High Power All-Solid-State Continuous-Wave Nd∶GdVO₄ Laser of Single-Frequency Operation at 1342 nm[J]. Laser & Optoelectronics Progress, 2015, 52(11): 111402.

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