飞秒激光器产生等离子体中电子剩余能量的研究  

The Study of the Electronic Residual Energy in the Plasma Produced by the Femtosecond Lasers

作　　者：陈建新[1] 王骐[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家级重点实验室,黑龙江哈尔滨150001

出　　处：《激光与红外》2002年第6期392-394,共3页Laser & Infrared

基　　金：国家 8 63高技术激光技术主题资助

摘　　要：飞秒激光器的出现 ,使强场中的电离过程由最初的多光子电离和阈上电离 ,发展为以隧道电离 (TunnelingIonization ,TI)或越过势垒电离 (Over the BarrierIonization ,OBI)为主要过程的光场感生电离 (Optical Field InducedIonization ,OFI)。由于等离子参数对电子温度的可控制性 ,使基于OFI的X射线激光的等离子体特性在很大范围内具有可控制性。文中主要研究不同激光参数 (泵浦激光的偏振特性 ,泵浦激光的波长 ,激光强度 ,电离能等 )The multiphoton ionization and above threshold ionization are developed to optical field induced ionization which is dominated by tunneling ionization and over the barrier ionization because of the appear of the femtosecond lasers. The characteristic of plasma of X ray laser has many commands as the parameter of plasma can dominate the electron temperature. In this paper, the effect of the different laser parameter against the electronic residual energy is mainly studied.

关 键 词：飞秒激光器 等离子体 电子剩余能量 激光参数 光场感生电离 偏振 波长 电离能 

分 类 号：TN248[电子电信—物理电子学]