基于牛顿望远镜系统的激光叠加技术研究
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摘要
为了提高激光打标的能量,研究了三光束激光叠加光学系统的设计问题。以牛顿望远镜结构为基础,创新性地设计了包括空间两两夹角为120°的3片次镜的三光束聚焦系统,3束光共用1个主镜,可以有效避免中心遮拦问题。以203.2mm口径抛物镜为主镜,标靶距离2km为例进行仿真设计,确定了光学系统各结构参数,分析对比了当入射光为点光源、平行光和高斯光束时在目标距离处产生的光斑图。针对1~2km的聚焦范围,提供变焦方法。通过仿真验证表明,光学系统可以在目标距离处得到较好的聚焦光斑,而且有效地解决了中心遮拦问题。
In order to improve the energy of laser targets,the designing problems of the superposition optical system of the three-beam laser was studied.Based on the structure of Newton telescope,a three-beam focusing system of three secondary mirrors including an intersection angle of 120°in space was designed creatively.The three beams shared a primary mirror,which can effectively solve the problem of center obstruction.Took a parabolic mirror with a diameter of 203.2 mm and a target distance of 2 km for example,a simulation design was conducted to determine the values of various structural parameters of the optical system.Analyzed and contrasted the spot pattern generated at the target distance when incident light was apoint light source,parallel light,and Gaussian beam.A zoom method was provided aimed at a focus range of 1 km to 2 km.Through simulation,it was verified that optical system can obtain better focused spot at the target distance,and effectively solve the central occlusion problem.
In order to improve the energy of laser targets,the designing problems of the superposition optical system of the three-beam laser was studied.Based on the structure of Newton telescope,a three-beam focusing system of three secondary mirrors including an intersection angle of 120°in space was designed creatively.The three beams shared a primary mirror,which can effectively solve the problem of center obstruction.Took a parabolic mirror with a diameter of 203.2 mm and a target distance of 2 km for example,a simulation design was conducted to determine the values of various structural parameters of the optical system.Analyzed and contrasted the spot pattern generated at the target distance when incident light was apoint light source,parallel light,and Gaussian beam.A zoom method was provided aimed at a focus range of 1 km to 2 km.Through simulation,it was verified that optical system can obtain better focused spot at the target distance,and effectively solve the central occlusion problem.
引文
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[2]安毓英,曾小东,刘劲松,等.战术激光武器的威胁及其技术剖析[J].应用光学,1994(5):5-15.
[3]张昊春,宋乃秋,戴赞恩,等.高能激光武器目标打击的多物理场系统仿真[J].应用光学,2017,38(4):526-532.
[4]李彬,叶一东,颜宏,等.激光场相干叠加光束合成技术[J].强激光与粒子束,2014,26(10):152-156.
[5]赵知诚,沈为民,唐敏学,等.非相干叠加激光发射系统光学设计[J].红外与激光工程,2014,43(6):1728-1734.
[6]刘金江,王忠山.光干涉中的非相干叠加问题[J].东北师大学报:自然科学版,1992(4):49-53.
[7]刘辉,李兴隆,裴云天,等.离轴三反射式光学系统的设计[J].激光与光电子学进展,2008(12):59-63.
[8]伍和云,王培纲.离轴反射式光学系统设计[J].光电工程,2006(1):34-37.
[9]高瑀含,安志勇,李娜娜,等.高斯光束整形系统的光学设计[J].光学精密工程,2011,19(7):1464-1471.
[10]刘焕宝,安志勇,高瑀含,等.一种激光变焦扩束光学系统设计[J].长春理工大学学报:自然科学版,2010,33(4):43-45,49.