供电461 W激光无线传能系统研制  

Laser Wireless Transmission System with Electric Output of 461 W

作　　者：于方磊 邹朝冉 孟祥翔 彭越 张金刚 YU Fanglei;ZOU Zhaoran;MENG Xiangxiang;PENG Yue;ZHANG Jingang(Shandong Institute of Aerospace Electronics Technology,Yantai 264000,China;School of Physics and Electronic Information,Yantai University,Yantai 264000,China;Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China)

机构地区：[1]山东航天电子技术研究所,烟台264000 [2]烟台大学物理与电子信息学院,烟台264000 [3]北京宇航系统工程研究所,北京100071

出　　处：《光子学报》2024年第8期170-179,共10页Acta Photonica Sinica

基　　金：山东省自然科学基金(No.ZR2022QF095)。

摘　　要：为了满足特定场景下激光无线传能的大功率应用需求,提升系统接收效率,研制了一套方形均匀光斑照明、高接收占空比的大功率激光无线传能系统。发射端采用两台高功率808 nm半导体激光器,实现1700 W激光输出并耦合进入方芯光纤,利用方芯光纤对激光进行匀化,在其输出端面形成均匀光斑,设计了投影光学系统将方芯光纤出射端面放大并照射在形状匹配的420 mm×420 mm光电池板上;接收端将1020片GaAs光电池分别与聚焦透镜集成封装以提升光敏面占空比。经试验测试,当入射激光功率1700 W时,电子负载端接收电功率461 W,接收端整体光电转换效率27.1%。结果表明:该激光无线传能系统为特定环境下大功率负载无线供电提供了解决方案。Laser wireless energy transmission system is a new power supply technology,which uses high-energy laser beam as energy carrier,photovoltaic cells for photoelectric conversion and non-contact energy transmission in space.In the scene with high air humidity and salinity,the traditional plug-in power supply method is used to supply power to electrical equipment,which has great security risks and the equipment is vulnerable to electromagnetic interference.The laser wireless energy transmission system can realize safety in the same working environment and provide high-power electric energy for electrical equipment.The laser wireless energy transmission system consists of a transmitter and a receiver.The volume and weight of the receiving end of the system are strictly limited by the carrier in most applications,and the photoelectric efficiency of the receiving end of the high-power laser wireless energy transmission system will be far less than the measured value in the laboratory due to the low duty ratio of the photosensitive surface,the influence of the circuit efficiency on the illumination distribution of the light spot and the temperature increase caused by continuous illumination.In order to eliminate the influence of the above three factors,the conventional methods include photovoltaic cell arrangement,large-aperture focusing lens reception,heat sink and fan cooling,etc,but there are still some shortcomings such as complicated arrangement,mismatched shapes and heavy weight of the receiving end.Aiming at the above problems,a set of high-power laser wireless energy transmission system is developed.The transmitting end of the system consists of two 808 nm semiconductor lasers,an optical fiber coupling lens,a square-core optical fiber and an object telecentric projection lens.The transmitter uses square-core fiber to homogenize Gaussian beam.A projection lens is designed by using the“positive-positive-negative”structure.The three lenses of the projection lens are all spherical mirrors made of JGS1 material.The

关 键 词：激光无线传能 方芯光纤 均匀光斑 光电池 光电转换效率 

分 类 号：V423.44[航空宇航科学与技术—飞行器设计]