Experimental study on beam shaping in a reduced-scale relay mirror system

被引：0
|
作者：
Wu, Huiyun [1 ]
Ma, Haotong [2 ]
Xu, Xiaojun [2 ]
Chen, Jinbao [2 ]
Zhao, Yijun [2 ]
机构：
[1] Acad Mil Med Sci, Dept Sci & Technol, Beijing 100850, Peoples R China
[2] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2013年 / 45卷 / 01期
关键词：
Relay mirror system; Power coupling efficiency; Uplink propagation; Beam shaping;
D O I：
10.1007/s11082-012-9597-5
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Improving power coupling efficiency of beam uplink propagation in a relay mirror system is under extensive research in recent years. A typical model of the relay mirror system is established and theory of beam shaping used to improve power coupling efficiency of the relay mirror system is analyzed in detail. A reduced-scale experimental relay mirror system is founded, which has the same Fresnel number as uplink propagation in the relay mirror system with 1.0 m-caliber transmitter and 30 km propagation distance. Phase distribution of the source is optimized by using the stochastic parallel gradient descent algorithm. The experimental results showed that power coupling efficiency of uplink propagation in the reduced-scale relay mirror system was improved from 72.67 to 87.88 % by beam shaping and the bucket power proportion in 5 pixels at the target was improved from 45.49 to 52.78 %.
引用
收藏
页码：1 / 9
页数：9
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