强激光在大气传输中瞬态受激喇曼散射效应的研究

The Research of Transient Stimulated Raman Scattering on High-Intensity Lasers Propagation in the Atmosphere

本文用瞬态受激喇曼散射(SRS)理论,讨论了瞬态受激喇曼散射脉冲系列稳态响应和分子的储存效应。给出了在均匀介质和非均匀介质(实际大气)情况下的斯托克斯光强随脉冲间隔、传输距离和天顶角变化的函数关系。对于高重复率和脉宽较窄的强激光在大气传输中,由于分子的储存效应,受激喇曼散射较严重。

In this paper the pulse-train steady-state respouse of transient SRS and molecular memory effects is studied by the transient theory. The solutions describe stokes intensity as a function of inter pulse spacing, distance and zenith angle in a uniform medium and in nonuniform medium (atmosphere). In the atmosphere, on propagation of High-Intensity lasers of high pulse repetition rate and narrow pulsewidth, the SRS will be serious because of molecular memory effects.