Tunneling in Strong Light Fields
Tunneling in Strong Light Fields作者机构:Institute of Low Energy Nuclear Physics Beijing Normal University Beijing 100875 PRC
出 版 物:《Chinese Science Bulletin》 (科学通报(英文版))
年 卷 期:1993年第38卷第10期
页 面:820-822页
核心收录:
基 金:Project supported by the National Natural Science Foundation of China
主 题:photoionization of atoms tunneling Keldysh formula multiphoton absorption.
摘 要:In the 1960s Keldysh gave a formula for the photoionization probability of atoms in strong light fields as W=exp[-2|Ei|/ωf(γ)], (1) f(γ)=(1+1/2γ2) sinh-1γ-(1+γ2)1/2/2γ, γ=(2|Ei|)1/2ω/ε, (2)where, ε is the amplitude of the electric vector of the applied laser and sinh-1 stands for the inverse hyperbolic sine function. From this formula, he