月球科研站多光束激光传能系统设计

Muti-beam lasers power transmission for lunar research station

针对月表阴影区的能源保障需求,提出一种基于多光束发射的激光无线能量协同传输方法,对月面激光无线传能链路效率进行了对比分析,由于808 nm半导体激光器和与之相应的GaAs光电池具有较高的转换效率,更适合距离1 km内激光传能系统。模拟了不同光束质量激光束经光学系统扩束后,发散角调节对于调焦精度的要求,以及远场光强分布,结果表明,基于多个高光束质量激光束的传能系统具有接收端光强分布可调、传输功率可扩展等优势,为面向极区阴影区探测的无线能源保障系统的实现提供理论依据。

Aiming at the power security requirements in the shadow area of the lunar surface,a multibeam laser wireless power cooperative transmission method was proposed,and the efficiency of the lunar surface laser wireless power transmission link was theoretically analyzed.Due to the high conversion efficiency of the semiconductor laser with wavelength of 808 nm and the corresponding GaAs cell,it was more desired for the laser wireless power transmission system at 808 nm within a distance of 1 km.The requirements of focusing accuracy and the far field spot distribution of laser beams with different beam quality were simulated after beam expansion by optical system.The results show that the wireless power transfer system based on multiple high beam quality laser beams has the advantages of adjustable intensity distribution at the receiving end and scalable transfer power,which provides a theretical basis for the realization of wireless power security systemfor polar shadow detection.