光学学报, 2011, 31 (5): 0522002, 网络出版: 2011-05-09
基于神光Ⅲ原型的全孔径背反诊断系统光路优化设计
Optimization Design of Full Aperture Backscattering Diagnosis System Based on Shenguang Ⅲ Prototype Laser Facility
光学设计 全孔径背反 菲涅耳透镜 能量平衡 非线性 受激拉曼散射 受激布里渊散射 optical design full aperture backscattering Fresnel lens energy balance nonlinearity SRS SBS
摘要
对神光Ⅲ原型复杂激光光路条件下的背反诊断系统进行了光路改造优化设计。引进菲涅耳透镜和采用真空空间滤波方式，对激光打靶光路终端光学组件中镜片反射的杂散光与非线性效应导致的背反信号进行空间分离，解决了杂散光与非线性散射光同光轴问题。并在神光Ⅲ原型装置上进行了全孔径背反系统实验验证，为激光靶耦合能量平衡精密诊断提供了可能条件和重要参考。
Abstract
Full aperture backscattering diagnosis system of Shenguang Ⅲ laser prototype facility is optimized under the condition of complex laser optical mirrors. Nonlinear scattering signals are collected by long focus Fresnel lens and focalize at the focus as background light is filtrated by vacuum spatial filter. Nonlinear scattering signals have been separated in space from background light. Then coaxial problem of nonlinear scattering signals with background light is resolved. Scattering light energy and spectrum of full aperture backscattering is measured in hohlraum experimental on Shenguang Ⅲ laser facility. Full aperture backscattering diagnosis system after optimization is validated by the hohlraum experiment, which offers possible condition and important referrence for exact laser-target coupling and energy balance precision diagnosis.
焦春晔, 王峰, 蒋小华, 刘慎业, 杨正华, 李三伟, 李志超, 刘永刚, 陈铭, 张小丁, 谷渝秋, 丁永坤. 基于神光Ⅲ原型的全孔径背反诊断系统光路优化设计[J]. 光学学报, 2011, 31(5): 0522002. Jiao Chunye, Wang Feng, Jiang Xiaohua, Liu Shenye, Yang Zhenghua, Li Sanwei, Li Zhichao, Liu Yonggang, Chen Ming, Zhang Xiaoding, Gu Yuqiu, Ding Yongkun. Optimization Design of Full Aperture Backscattering Diagnosis System Based on Shenguang Ⅲ Prototype Laser Facility[J]. Acta Optica Sinica, 2011, 31(5): 0522002.
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