Small-scale non-uniformity of cross segmented wedge array focus system

ZHENG Jian-zhou; YU Qing-xu; GUAN Shou-hua

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Small-scale non-uniformity of cross segmented wedge array focus system

Article | 更新时间：2020-08-12

- Small-scale non-uniformity of cross segmented wedge array focus system
- Optics and Precision Engineering Vol. 17, Issue 1, Pages: 38-44(2009)
- 作者机构：
  
  1. 大连理工大学应用物理与光电技术学院,辽宁大连 116024
  2. 大连民族学院理学院,辽宁大连 116600
- 作者简介：
- 基金信息：
- DOI：
  CLC： O436.1
- Received：21 February 2008，
  
  Revised：29 May 2008，
  
  Published Online：25 January 2009，
  
  Published：25 January 2009
- 稿件说明：
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郑建洲, 于清旭, 关寿华. 正交光楔列阵光学系统的小尺度不均匀性[J]. 光学精密工程, 2009,17(1): 38-44

ZHENG Jian-zhou, YU Qing-xu, GUAN Shou-hua. Small-scale non-uniformity of cross segmented wedge array focus system[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 38-44
郑建洲, 于清旭, 关寿华. 正交光楔列阵光学系统的小尺度不均匀性[J]. 光学精密工程, 2009,17(1): 38-44 DOI：

ZHENG Jian-zhou, YU Qing-xu, GUAN Shou-hua. Small-scale non-uniformity of cross segmented wedge array focus system[J]. Editorial Office of Optics and Precision Engineering, 2009,17(1): 38-44 DOI：

摘要

推导出了正交光楔列阵(CSWA)聚焦系统的多光束干涉条纹主极大和两相邻主极大间的次极大间距公式

并根据广义惠更斯-菲涅耳衍射积分理论

通过数值计算证明了CSWA的小尺度不均匀性的变化规律与物理光学的公式符合。另外

提出改善小尺度不均匀性的两种方法:楔角偏差和离焦打靶技术。计算分析和实验研究表明

优化楔角偏差和离焦量的量值

即

=2.0%

=2 mm时

干涉主极大间隔与没加这两种技术时相比减小了6倍

小尺度的不均匀性得到了明显的改善。

Abstract

The Separation of Interference Fringes of the Main Diffraction Maxima (SIFMDM) and the second maximum for Cross Segmented Wedge Array (CSWA) focus system were derived

and the change rules of the Small-scale Irradiation Non-uniformity(SSINU) were confirmed by numerical calculations based on the generalized Huygens-Fresnel diffraction integral theory. The two methods of reducing the SSINU

the Deviation of Wedge Angles (DWA) and the Off-focal Laser Radiation on the Target (OFLRT)

were proposed.Theoretical study and experimental results show they agree quite well. By both the DWA and the OFLRT

the SIFMDM can be reduced by 6 times and the SSINU is also improved obviously

when the DWAS and off-focal variables are optimized to

=20%

=2 mm.

关键词

Keywords

references

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