摘要
利用密度矩阵方程和麦克斯韦传播方程的耦合并且考虑激光脉冲的横向效应, 在柱对称的条件下, 研究了两束脉冲在级联系统中的共振传播, 考察了脉冲在光学厚介质中的时空演化过程。数值计算中考虑了两个上能级的自发辐射速率, 给出了脉冲能量的空间演化及电离粒子在空间的分布。
Based on the coupled m atrix density equations and M axw ellequationsand considered the transverse effect of the laser pulses, resonant propagation oftw o laser pulses in three levelladder system w as presented under the cylindricalsym m etry. The evolutions of pulses propagating in thick absorbers w ere stud ied. The spontaneous relaxation of upper levels is considered in num erical solu tions. The calculation results show the evolution of pulse energy and the distri bution of ionization particle.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第8期1009-1013,共5页
Acta Optica Sinica
关键词
级联系统
横向效应
三能级系统
激光脉冲
ladder system , transverse effect, evolution of pulse energy, ionization particle.