宽带放大逆问题对于研究高功率激光系统的放大性能十分重要。将极化强度时域解析法应用于亚纳秒量级的宽带放大研究,通过Gerchberg-Saxton(GS)和遗传算法的混合算法,详细模拟和研究了脉冲激光的宽带放大逆问题,即给定输出脉冲的时间和空间分布,结合放大系统参数,逆向反演注入放大器脉冲的时空波形。极化强度时域解析法应用于宽带放大具有计算耗时少的优点,混合智能算法简化了激光放大器的逆问题模型,加快了逆问题求解的收敛速度。 The inverse problem of broadband amplification is very important for studying the amplification performance of high power laser system. The polarization time domain analysis method is applied to broadband amplification in subnanosecond order. By using the hybrid algorithm of Gerchberg-Saxton (GS) and genetic algorithm, the inverse problem of broadband amplification of pulsed laser is simulated and studied in detail. Output pulse of time and space distribution, combined with the amplification system parameters, inverted inversely injected into the amplifier pulse space-time waveform. The application of polarization strength time-domain analysis in broadband amplification has the advantage of less computation time. The hybrid intelligent algorithm simplifies the inverse problem model of laser amplifier and accelerates the convergence speed of inverse problem solving.