多束部分相干光抑制光强闪烁效应的仿真实验研究

王锐

doi:10.3788/fgxb20143507.0835

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多束部分相干光抑制光强闪烁效应的仿真实验研究

器件制备及器件物理 | 更新时间：2020-08-12

- 多束部分相干光抑制光强闪烁效应的仿真实验研究
- Simulation Experiment of Using Multiple Partially Coherent Beams to Limit Laser Intensity Scintillation Effect
- 发光学报 2014年35卷第7期页码：835-839
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所激光与物质相互作用国家重点实验室,吉林长春,130033
- 作者简介：
  
  [ "王锐（1982- ），男。 E-mail：darui9999@yahoo.com.cn" ]
- 基金信息：
  
  吉林省科技发展计划（20126015）资助项目()
- DOI：10.3788/fgxb20143507.0835
  中图分类号： TP394.1;TH691.9
- 收稿日期：2014-02-25，
  
  修回日期：2014-05-24，
  
  纸质出版日期：2014-07-03
- 稿件说明：
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王锐,. 多束部分相干光抑制光强闪烁效应的仿真实验研究[J]. 发光学报, 2014,35(7): 835-839

WANG Rui,. Simulation Experiment of Using Multiple Partially Coherent Beams to Limit Laser Intensity Scintillation Effect[J]. Chinese Journal of Luminescence, 2014,35(7): 835-839
王锐,. 多束部分相干光抑制光强闪烁效应的仿真实验研究[J]. 发光学报, 2014,35(7): 835-839 DOI： 10.3788/fgxb20143507.0835.

WANG Rui,. Simulation Experiment of Using Multiple Partially Coherent Beams to Limit Laser Intensity Scintillation Effect[J]. Chinese Journal of Luminescence, 2014,35(7): 835-839 DOI： 10.3788/fgxb20143507.0835.

摘要

为了有效抑制激光大气传输过程中引起的闪烁效应，本文围绕照明光束相干性与闪烁指数关系展开研究。首先，明确闪烁效应产生机理，建立与光束相干性相关的数学模型。然后，采用偏振分光元件将出射激光分为4束，并破坏其相干性。在此基础上，以随机相位屏为核心元件构建大气湍流仿真实验装置，评估不同光束相干性条件下的远场光斑闪烁指数。实验结果表明，4束光照明的光斑闪烁指数比单光束照明降低了75%。理论分析及实验结果均证明了多束部分相干光在抑制光强闪烁效应方面的有效性。

Abstract

In order to restrain the scintillation effect in the course of laser transmitting through the atmosphere

the relation between the laser coherence and the scintillation index was researched. First

the mathematic model correlating with laser coherence was established based on the generation mechanism of scintillation effect. Then

the laser was divided into four beams

and the coherence was destroyed. On this basis

the atmosphere turbulence emulation experiment device was made using the random phase screen as core element

and the far field spot scintillation index with different laser coherence was evaluated. Experimental results indicate that the scintillation index with four beams reduce about 75% in comparison with single beam. So the availability of multiple partially coherent beams limiting laser intensity scintillation effect has been approved by the result of theory analyzing and experiment.

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references

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