任意偏振态极短光脉冲在各向同性介质中的非线性传输  

Nonlinear Propagation of Extremely Short Optical Pulses with Arbitrary State of Polarization in Isotropic Medium

作　　者：刘宏利[1] 杨少辰[1] 于光辉[2] 赵中龄[1] 

机构地区：[1]北方交通大学理学院应用技术研究所,北京100044 [2]北方交通大学光电子技术研究所,北京100044

出　　处：《中国激光》2001年第11期981-984,共4页Chinese Journal of Lasers

摘　　要：只有几个光振荡周期长的飞秒脉冲不能采用传统的慢变包络方法描述 ,这样的极短光脉冲可以用单向波近似将电场的波动方程简化后结合物质方程给出封闭的电场的传输方程。用如上方法给出了新的具有任意偏振态的极短光脉冲在各向同性介质中的传输方程 ,并用数值方法研究了脉冲两个偏振分量间的相互作用。The traditional slowly varying envelope method can't be used for propagation of femtosecond pulse with duration of several optical oscillation periods. By simplifying the elecric field's wave equation with unidirectional wave approximation and incorporating the material equation the propagation equation of electric field of such extremely short optical pulse can be attained. With this method the new propagation equation of extremely short optical pulse with arbitrary polarization state in isotropic medium has been presented. The interaction between two polarization parts has also been studied numerically.

关 键 词：极短光脉冲 任意偏振态 各向同性介质 非线性传输 

分 类 号：O436[机械工程—光学工程]