物理学报Issue(4)：1-6,6.DOI:10.7498/aps.64.043201
高频激光脉冲作用下原子的光子和光电子发射∗
Photon and photo electron emission of the atom under the action of high-frequency laser pulse
摘要
Abstract
By numerically solving the time-dependent Schrödinger equation, we investigate the ionization probability, photo-electron spectrum, and harmonic emission spectrum of the atom under the action of high-frequency laser pulses. It is found that with the increase of incident laser pulse intensity, the ionization probability of the atom first increases to a maximum value gradually and then decreases, and in this process, both the photoelectron spectrum and high-order harmonic generation spectrum change from a single-peak structure to a multi-peak one. Through the time-frequency analysis of the harmonic emission spectrum, we also find that the harmonic emission is suppressed around the pulse peak, and it occurs at the rising edge and the falling edge, which interfere with each other, thus forming the multi-peak structure. Utilizing the laws of the changes of photoelectron and harmonic spectra with incident laser pulse intensity, we can diagnose the laser intensity at which the atomic ionization suppression occurs.关键词
高频激光脉冲/谐波发射谱/光电子谱Key words
high-frequency laser pulses/harmonic emission spectrum/photoelectron spectrum引用本文复制引用
崔鑫,李苏宇,郭福明,田原野,陈基根,曾思良,杨玉军..高频激光脉冲作用下原子的光子和光电子发射∗[J].物理学报,2015,(4):1-6,6.基金项目
国家重点基础研究发展计划(批准号:2013CB922200)、国家自然科学基金(批准号:11274141,11034003,11304116,11274001,11247024)和吉林省基础研究计划基金(批准号:20140101168JC)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2013CB922200), the National Natural Science Foundation of China (Grant Nos.11274141,11034003,11304116,11274001,11247024), and the Jilin Provincial Research Foundation for Basic Research, China (Grant No.20140101168JC) （批准号:2013CB922200）
