飞秒强激光经氩气和氩团簇的传播

通过数值求解三维电场传播方程，理论模拟了飞秒强激光脉冲（50fs，10^16w／cm^2）在氩气和中等尺寸氩团簇中的传播效应．结果表明，飞秒强激光脉冲经氩气传播将发生频谱蓝移展宽和光束发散；而经中等尺寸氩团簇传播，则存在一定程度的自聚焦效应．

The propagation of intense femtosecond laser pulses(50 fs,10 16 w/cm2) in Ar gas and middle-size Ar clusters is modelled by solving 3D propagation equation numerically.The results show that the intense femtosecond laser pulses propagating in Ar gas will experience ionization-induced modulations, including spectral blueshifting and beam refraction,while self-focusing may occur for the intense femtosecond laser pulses propagating in Ar clusters.