ω-2 ω双色场相位控制电离:隧穿电离与过势垒电离的比较  

ω-2ω Two Color Phase Control of Ionization: Comparison of Tunneling and Over the Barrier Regimes

作　　者：吴海涛[1] 龚尚庆[1] 金石琦[1] 徐至展[1] 

机构地区：[1]中国科学院上海光学精密机械研究所强光光学开放实验室,上海201800

出　　处：《光学学报》2001年第8期897-900,共4页Acta Optica Sinica

基　　金：国家重点基础研究专项经费资助课题

摘　　要：对于在ω 2ω双色场作用下的原子 ,在两种不同电离机制下探讨了电离过程的相位效应。结果发现在隧穿机制下总电离率随相对相位的变化呈“∩”形 ,而在过势垒机制下呈“∪”形。For an atom under the action of ω-2ω two-color fields, the phase effects of ionization process in different ionization regimes are investigated. The dependence of ionization possibility on relative phase is found in tunneling regime being a shape of '∩', while in the over-the-barrier regime being a shape of '∪'. Our results demonstrate the possibility of phase control of ionization process by using two-color fields.

关 键 词：双色场 相位控制 隧穿电离 过势垒电离 原子 

分 类 号：O562.4[理学—原子与分子物理] O437[理学—物理]