| 环形孔径高斯光束的远场特性 |
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| 引用本文： | 沈锋,姜文汉.环形孔径高斯光束的远场特性[J].强激光与粒子束,2000,12(3):257-260. |
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| 作者姓名： | 沈锋 姜文汉 |
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| 作者单位： | 中科院光电技术研究所，成都双流350信箱 610209 |
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| 基金项目： | 国家863信息获取与处理技术领域资助课题 |
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| 摘 要： | 讨论了环形孔径高斯光束的远场光斑能量分布，并给出了拟合表达式。首先推导了光束没有抖动时远场光斑的光能分布表达式，然后研究了各种不同中心遮拦和不同光束截断比, 在有以及没有激光束抖动的情况下，对高斯光束的远场环围能量的分布变化的影响。
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| 关 键 词： | 高斯光束 中心遮拦 远场光斑 环围能量 |
| 文章编号： | 1001-4322(2000)03-0257-04 |
| 收稿时间： | 1900-01-01; |
| 修稿时间： | 1998年12月14 |
TRANSMITTING CHARACTERISTICS OF A GAUSSIAN BEAMDUE TO THE TELESCOPE 'S CENTER OBSCURE |
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| SHEN Feng,JIANG Wen-han Institute of Optics and Electronics,Chinese Academy of Science,P.O.Box ,Shuangliu Chengdu, China.TRANSMITTING CHARACTERISTICS OF A GAUSSIAN BEAMDUE TO THE TELESCOPE 'S CENTER OBSCURE[J].High Power Laser and Particle Beams,2000,12(3):257-260. |
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| Authors: | SHEN Feng JIANG Wen-han Institute of Optics and Electronics Chinese Academy of Science POBox Shuangliu Chengdu China |
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| Institution: | SHEN Feng,JIANG Wen-han Institute of Optics and Electronics,Chinese Academy of Science,P.O.Box 350,Shuangliu Chengdu,610209 China |
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| Abstract: | The far-field irradiance distribution of a Gaussian beam which is transmitted from telescope with certain center obscure is researched in this paper. First, we derive a representation of irradiance distribution in far field of a Gaussian beam through a obscured telescope without beam's random jitter, and then give a approximation formula of encircled power and spot radius of certain encircled power ratio with and without beam's jitter due to telescope's center obscure. Finally, we researched the joint effects of truncation and obscure on a Gaussian beam's far-field energy distribution. |
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| Keywords: | Gaussian beam center obsure far-field spot encircled power |
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