反射式椭圆高斯光束平顶整形系统

孟祥翔; 刘伟奇; 柳华; 魏忠伦; 康玉思; 冯睿; 吕伟振

doi:10.3788/fgxb20133407.0940

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反射式椭圆高斯光束平顶整形系统

发光学应用及交叉前沿 | 更新时间：2020-08-12

- 反射式椭圆高斯光束平顶整形系统
- A Reflective Optical System for Converting Elliptical Gaussian Laser Beam to Flat-top Beam
- 发光学报 2013年34卷第7期页码：940-947
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所,吉林长春,130033
  2. 中国科学院大学, 北京 100049
- 作者简介：
- 基金信息：
  
  国家"();863"();高技术研究发展计划(2009AA032701)资助项目()
- DOI：10.3788/fgxb20133407.0940
  中图分类号： TN249
- 收稿日期：2013-04-23，
  
  修回日期：2013-05-12，
  
  纸质出版日期：2013-07-10
- 稿件说明：
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孟祥翔, 刘伟奇, 柳华, 魏忠伦, 康玉思, 冯睿, 吕伟振. 反射式椭圆高斯光束平顶整形系统[J]. 发光学报, 2013,34(7): 940-947

MENG Xiang-xiang, LIU Wei-qi, LIU Hua, WEI Zhong-lun, KANG Yu-si, FENG Rui, LV Wei-zhen. A Reflective Optical System for Converting Elliptical Gaussian Laser Beam to Flat-top Beam[J]. Chinese Journal of Luminescence, 2013,34(7): 940-947
孟祥翔, 刘伟奇, 柳华, 魏忠伦, 康玉思, 冯睿, 吕伟振. 反射式椭圆高斯光束平顶整形系统[J]. 发光学报, 2013,34(7): 940-947 DOI： 10.3788/fgxb20133407.0940.

MENG Xiang-xiang, LIU Wei-qi, LIU Hua, WEI Zhong-lun, KANG Yu-si, FENG Rui, LV Wei-zhen. A Reflective Optical System for Converting Elliptical Gaussian Laser Beam to Flat-top Beam[J]. Chinese Journal of Luminescence, 2013,34(7): 940-947 DOI： 10.3788/fgxb20133407.0940.

摘要

为了将椭圆高斯光束整形为圆形平顶光束

设计了一种无中心遮拦反射式两镜整形系统。根据能量守恒思想

选择匀化洛伦兹函数作为出射光束平顶分布函数

建立了入射面和出射面之间的坐标变换关系;采用光程守恒原理和矢量形式的反射定律

推导了积分形式的整形系统两反射镜面形方程。利用数值解法计算出两反射镜的面形数据

经过光学设计软件仿真与系统参数分析

得到的圆形平顶光束在目标区域的照度均匀性大于95%。结果表明

这种整形系统可以明显提高椭圆高斯光束的平顶性

具有现实可行性。

Abstract

In order to convert elliptical Gaussian laser beam to circle flat-top beam

a two-mirror unobscured reflective optical system is designed. Based on the energy conservation law

the Flattened Lorentzian function is chosen as the distribution expression of the output flat-top beam to build the relationship between the input and output aperture coordinates. The equations in integral form that describe the reflective surfaces of the shaping system are derived by applying the law of reflection expressed in vector. Through the numerical calculation of the surface data and optical design software simulation

the circle flat-top collimated output beam is achieved and the illumination uniformity of the target area is above 95%. It indicates that the shaping system could improve the flatten degree of the elliptical Gaussian laser beam apparently.

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references

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