Open AccessVerification of a scaling law in few-cycle laser pulses
Author(s) -
Xiaoming Zhang,
Jingtao Zhang,
Lihua Bai,
Qihuang Gong,
Zhizhan Xu
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.008708
Subject(s) - photoionization , laser , scaling law , asymmetry , atomic physics , pulse (music) , optics , physics , scaling , photoionization mode , intensity (physics) , ionization , ion , quantum mechanics , mathematics , geometry , detector
The scaling law of photoionization in few-cycle laser pulses is verified in this paper. By means of numerical solution of time-dependent Schrödinger equation, the photoionization and the asymmetry degree of photoionization of atoms with different binding potential irradiated by various laser pulses are studied. We find that the effect of increasing pulse intensity is compensated by deepening the atomic binding potential. In order to keep the asymmetric photoionization unchanged, if the central frequency of the pulse is enlarged by k times, the atomic binding potential should also be enlarged by k times, and the laser intensity should be enlarged by k(3) times.