多光束发射对湍流效应下激光传输的影响

王静; 陶向阳

多光束发射对湍流效应下激光传输的影响

王静^,,
陶向阳

1.
江西师范大学物理与通信电子学院,江西南昌330022;
2.
江西省光电子与通信重点实验室,江西南昌330022

详细信息

通讯作者:
王静(1983-)，云南玉溪人，女，硕士研究生，主要从事激光传输方面的研究工作。

中图分类号: TN012
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出版历程
- 刊出日期: 2011-01-15

AImpact of multi-beam launch on laser atmospheric transmission under turbulence effect

WANG Jing^,,
TAO Xiang-yang

1.
Institute of Physics and Communication Electronics,Jiangxi Normal University,Nanchang 330022,China;
2.
The key Laboratory of Optoelectronics and Communications,Nanchang 330022,China

摘要

摘要: 大气湍流引起的光强起伏会导致大气闪烁、光束漂移、到达角起伏和波前畸变等效应。多光束发射技术是克服激光大气传输中光强起伏的有效途径之一。以单光束、双光束、四光束以及八光束发射为例，通过计算峰值光强、环围功率半径以及像散参数等光束质量参数，得到单光束和多光束大气传输的光强起伏特性。结果表明：随着光束数目的增加，峰值光强显著增大，环围功率半径逐渐缩小，像散参数也随之减小。说明多光束发射方法能有效地减弱湍流效应对大气激光传输的影响。
- 大气湍流 /
- 激光大气传输 /
- 多光束发射 /
- 光束质量参数
Abstract: Atmospheric turbulence induced intensity fluctuations lead to scintillation, beam drift, angle of arrival fluctuation and wavefront aberration. The multi-beam launch technique is one of the effective ways to mitigate the effect of atmospheric turbulence. Calculation of the beam quality parameters through peak intensity, encircled power radius and bulk parameters based on single beam, double beam, four beam and eight beams of light emission was made. Single-beam and multi-beam intensity fluctuation characteristics of atmospheric transmission were summarized. The results show that, with the increase of beam number, the peak intensity increases significantly, the encircled power radius decreases gradually, and the bulk parameters decreases as well. It is concluded that multi-beam emission method can effectively reduce the atmospheric turbulence effects of laser transmission.
- atmospheric turbulence /
- laser-atmospheric propagation /
- multi-beam launch /
- beam quality parameter

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参考文献(1)

［1］马东堂，魏急波，庄钊文.空间激光通信及应用［J］.半导体光电，2003，24(2)：139-144.MA Dong-tang,WEI Ji-bo,ZHUANG Zhao-wen. Space laser communications and applications［J］. Semiconductor Optoelectronics, 2003，24(2)：139-144.(in Chinese with an English abstract)［2］马东堂，魏急波，庄钊文.大气激光通信中的多光束传输性能分析和信道建模［J］.光学学报，2004，24(8)：1020-1024.MA Dong-tang,WEI Ji-bo,ZHUANG Zhao-wen. Atmospheric laser communication in multi-beam transmission performance analysis and channel modeling［J］. Acta Optica Sinica, 2004，24(8)：1020-1024.(in Chinese with an English abstract)［3］强希文,王铁良,吴乃清.多光束激光大气传输［J］.光电子技术，1999，19(3)：167-172.QIANG Xi-wen,WANG Tie-liang,WU Nai-qing. Multi-beam laser propagation in the atmosphere［J］. Optoelectronic Technology. 1999，19(3)：167-172. (in Chinese with an English abstract)［4］吕百达.激光光学·激光束的传输变换和光束质量控制［M］.成都：四川大学出版社，1992.lU Bai-da. Laser optics·laser beam propagation and beam quality control［M］.Chengdu: Sichuan University Press,1992.(in Chinese)［5］FLECK J A, MORRIS J R, FEIT M D. Time-dependent propagation of high energy laser beams through the atmosphere［J］. Appl.Phys.,1976,10(2):129-160.

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