中国激光, 2010, 37 (S1): 152, 网络出版: 2010-10-29
高功率固体激光系统光束波前畸变特性分析
Wavefront Characters of High Power Solid-State Lasers
激光器 固体激光 波前 静态畸变 动态畸变 光束质量 lasers solid-state lasers wavefront static distortion dynamic distortion beam quality
摘要
分析了目前钕玻璃片、大口径反射镜和晶体等光学元件的波前特征, 同时对多路激光系统的静态波前和动态波前热畸变特征进行了统计分析。结果发现, 同类元件的波前特征具有很大的相似性, 因此不同路激光系统的静态波前特征也比较相似, 主放大系统静态波前以像散为主, 波前畸变峰谷值(PV)在2λ～3λ(λ为1053 nm)之间, 在采用90°旋转反转器的多程放大激光系统中, 主放大系统动态波前畸变以离焦为主, PV值在4λ～5λ之间, 扣除离焦后, 动态波前畸变PV值在1λ～2λ, 全系统最大波前畸变PV值可能超过6λ。
Abstract
In this paper, the wavefront properties of large aperture optics such as neodymium glass, reflecting mirrors and crystals have been systematically studied. Static and dynamic wavefront aberration of multi-beams laser system have been statistically analyzed. The results show that one kind of optics have similar wavefront properties, and different laser beams also have similar characteristics on static wavefront aberration. The chief static aberration of main amplifier is astigmatism with the PV value about 2λ～3λ (λ=1053 nm), and in 90° rotation reversal multi-pass amplifier laser system, the chief dynamic aberration of main amplifier is defocus with the PV value about 4λ～5λ. After excluding defocus, the dynamic wavefront aberration PV value is about 1λ～2λ, and maximum aberration of the whole laser system is likely to exceed 6λ.
赵军普, 胡东霞, 代万俊, 周维, 张鑫, 张崑, 蒋学君, 邓武. 高功率固体激光系统光束波前畸变特性分析[J]. 中国激光, 2010, 37(S1): 152. Zhao Junpu, Hu Dongxia, Dai Wanjun, Zhou Wei, Zhang Xin, Zhang Kun, Jiang Xuejun, Deng Wu. Wavefront Characters of High Power Solid-State Lasers[J]. Chinese Journal of Lasers, 2010, 37(S1): 152.
PDF全文
