脉冲半导体激光束并合参数研究  

Multi-beam combining parameters of pulsed laser diode

作　　者：吴健华[1] 樊桂花 孙华燕 郭惠超 

机构地区：[1]中国人民解放军92853部队 [2]装备学院

出　　处：《红外与激光工程》2013年第10期2646-2650,共5页Infrared and Laser Engineering

基　　金：十一五装备预先研究项目

摘　　要：采用光束并合的方法可以提高脉冲半导体激光器峰值功率以及远场光斑的均匀性,从而提高激光主动成像系统的作用距离,并实现系统的小型化。首先应用指数高斯光束传输模型推导了并合光束的远场能量分布,并采用Matlab仿真软件对影响光束并合效果的各激光器间轴线夹角、各激光器延迟时间以及并合激光器的间距等参数进行研究,最后进行光束并合实验,获得了1.5 km外目标的选通成像图像,对比了不同并合激光数目对成像性能的影响,验证了光束并合方法可以有效地改进成像质量。Multi-beam combining is an effective method for improving the power and far-field beam uniformity of pulsed laser diode. It can also increase the imaging range, and the laser active imaging system can be miniaturized. First, the combining beams distribution was derivated using Exponent-Gaussian model. Then the influence of some parameters such as the angle of the laser diodes away from horizontal line, the spacing between laser diodes and the lasing delay times were simulated with Matlab. Finally, the range-gated imaging beyond 1.5 km was obtained. It can be concluded that multi-beam combining can improve the performance of the range-gated imaging by comparing the imaging of different numbers of the laser diode.

关 键 词：脉冲半导体激光器 光束并合 距离选通成像 

分 类 号：TN212[电子电信—物理电子学]