Design of VISAR optical system for Shen-Guang-Ⅲ prototype

YAN Ya-dong; ZHANG Fa-quan; HE Jun-hua; QI Wen-bo

doi:10.3788/OPE.20101811.2355

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Design of VISAR optical system for Shen-Guang-Ⅲ prototype

Article | 更新时间：2020-08-12

- Design of VISAR optical system for Shen-Guang-Ⅲ prototype
- Optics and Precision Engineering Vol. 18, Issue 11, Pages: 2355-2361(2010)
- 作者机构：
  
  1. 中国科学院西安光学精密机械研究所,陕西西安 710119
  2. 桂林电子科技大学信息与通信学院,广西桂林,541004
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20101811.2355
  CLC： TH824;TH744.3
- Received：23 March 2010，
  
  Revised：24 July 2010，
  
  Published Online：25 November 2010，
  
  Published：25 November 2010
- 稿件说明：
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闫亚东, 张法全, 何俊华, 齐文博. 神光-Ⅲ原型装置用速度干涉仪的光学系统设计[J]. 光学精密工程, 2010,18(11): 2355-2361

YAN Ya-dong, ZHANG Fa-quan, HE Jun-hua, QI Wen-bo. Design of VISAR optical system for Shen-Guang-Ⅲ prototype[J]. Editorial Office of Optics and Precision Engineering, 2010,18(11): 2355-2361
闫亚东, 张法全, 何俊华, 齐文博. 神光-Ⅲ原型装置用速度干涉仪的光学系统设计[J]. 光学精密工程, 2010,18(11): 2355-2361 DOI： 10.3788/OPE.20101811.2355.

YAN Ya-dong, ZHANG Fa-quan, HE Jun-hua, QI Wen-bo. Design of VISAR optical system for Shen-Guang-Ⅲ prototype[J]. Editorial Office of Optics and Precision Engineering, 2010,18(11): 2355-2361 DOI： 10.3788/OPE.20101811.2355.

摘要

基于激光多普勒频移效应研制了一套应用于惯性约束聚变(ICF)研究的任意反射表面干涉测速系统(VISAR)。采用532 nm的照明激光设计了一套光谱带宽为0.2 nm的光学系统

通过合理选材

保证了光学系统的防辐射性能;基于光学膜系设计

滤除了526 nm的强干扰打靶激光以及其它波段的杂散光;采用模块化方法并设计光学铰链进行模块对接

简化了系统调试的复杂程度;利用激光对干涉仪粗调

再利用白光精调

实现了零程差调试。设计的系统光路总长为6.3 m

物方视场范围为1.0 mm

放大倍率为5、10;静态实验显示

干涉条纹平直、调制度达到0.67以上

物方分辨率达到5.3 m。目前

该系统已成功地在神光-Ⅲ原型装置上进行了动态实验。

Abstract

To establish a Velocity Interferometer System for Any Reflector(VISAR) for the shock velocity measurement based on a laser Doppler shift effect

an optical system with a bandwidth of 0.2 nm was designed by using the 532 nm laser illumination. By choosing advisable materials

the fused silica was used in the optical system to improve the radiation resistance. Then

the second harmonics of the drive lasers and other stray lights are filtered by band-pass filters and laser line filters. To simplify the system assembly

the modularized design method and a optical gemel hinge were taken to compose models. Furthermore

the 532 nm laser was used for initially adjustment and the white light was used for accurately adjustment to implement the optical path difference to the zero. The proposed system show its total path length is 6.3 m

field of view is 1.0 mm

and magnifications are 5 and 10. A static experiment was undertaken

which can offer straight fringes and can give a static contrast above 0.67 and a resolution of 5.3 um. Moreover

a dynamic experiment of the system was carried out on the Shen-Guang laser-Ⅲ facility successfully.

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references

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