高效激光无线能量传输及转换实验  

Experiment of Space Laser Energy Transmission and Conversion with High Efficiency

作　　者：何滔[1] 杨苏辉[1] 张海洋[1] 赵长明[1] 徐鹏[1] 郝嘉胤[1] 王华昕[1] 

机构地区：[1]北京理工大学光电学院,北京100081

出　　处：《中国激光》2013年第3期247-252,共6页Chinese Journal of Lasers

基　　金：国家863计划(2012AA120605)资助课题

摘　　要：分布式可重构卫星是一种新型的"模块化"航天器体系结构,各模块航天器可以独立制造及发射,通过空间激光能量传输和数据交互构成一个整体。针对模块航天器间激光无线能量高效传输关键技术,设计并搭建了激光无线能量传输的地面验证系统,通过理论分析了传输激光波长、光电转换材料等系统关键参数对于传输效率的影响,测量Si、GaAs等材料对不同波长激光的输出特性及转换效率,实验验证了照射强度等相关参数对传输效率的影响。实验结果表明:以793nm激光为传输介质,基于GaAs材料的无线能量传输演示系统的优势较为明显,对激光光-电的转换效率最高能达48%,系统总的电-激光-电的传输效率为18%。实验验证了空间激光能量高效率传输的可行性。Distributed reconfigurable satellite system is a new type of ＂ modular＂ spacecraft architecture. Each module of the spacecraft can be manufactured and launched independently, and they form a whole by space laser energy transmission and data exchange. In order to study the key technologies of space laser energy transmission and improve the transmission efficiency, a ground verification experiment of the laser energy transmission system is designed. The key parameters like the output characteristics and conversion efficiency of GaAs cells to different wavelengths of laser are measured. The relationship between the laser intensity and transmission efficiency is analyzed. The experimental results show that with 793 nm laser for the transmission medium, GaAs cells＇ laser to electric conversion efficiency is up to 48%, and that the whole electric-laser-electric transmission efficiency of system is 18 %. The experiment verifies the feasibility of efficient laser energy transmission.

关 键 词：光电子学 高效率激光无线能量传输 激光-电转换效率 GaAs电池 

分 类 号：O436[机械工程—光学工程]