强激光大气传输的远场光束亮度仿真研究

为了分析组束激光的战术应用前景,对强激光大气传输的远场光束亮度进行了理论分析和数值模拟。结果表明:10kW量级的强激光有效作用距离不超过10km,需要对发射系统孔径和光束质量进行严格的控制;激光器承载平台的抖动幅度是影响远场光束功率密度的主要因素,在抖动幅度很小或者可以忽略的条件下,湍流和热晕对远场光束起着近乎相同的作用。

Simulation research on the far field beam irradiance of high energy laser through atmospheric propagation

To analyze the tactical application foreground of combined laser,the theoretical analysis and numerical simulations of far field irradiance of high energy laser through atmospheric propagation are developed.It has been proved that the efficient operation distance of a high energy laser with about 10kW output power is no more than 10km,which need further control of the aperture diameter of transmitting system and beam quality.The jitter amplitude of bearing platform plays a dominant role in affecting the far field power density,in the case that such jitter amplitude is small enough or could be neglected,the turbulence and thermal blooming are of much the same effects on the far field beam irradiance.