A Scaling Law of Photoionization in Ultrashort Pulses
ZHANG Xiao-Ming1, ZHANG Jing-Tao2, BAI Li-Hua2, GONG Qi-Huang1, XU Zhi-Zhan2
1State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100087
2State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800
A Scaling Law of Photoionization in Ultrashort Pulses
1State Key Laboratory for Mesoscopic Physics, Department of Physics, Peking University, Beijing 100087
2State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Shanghai 201800
Abstract： By means of the numerical solution of time-dependent Schrödinger equation, we verify a scaling law of photoionization in ultrashort pulses. We find that for a given carrier-envelope phase and duration of the pulse, identical photoionizations are obtained provided that when the central frequency of the pulse is enlarged by k times, the atomic binding potential is enlarged by k times, and the laser intensity is enlarged by k3 times. The scaling law allows us to reach a significant control over direction of photoemission and offers exciting prospects of reaching similar physical processes in different interacting systems which constitutes a novel kind of coherent control.
(Multiphoton ionization and excitation to highly excited states)
引用本文:
ZHANG Xiao-Ming;ZHANG Jing-Tao;BAI Li-Hua;GONG Qi-Huang;XU Zhi-Zhan. A Scaling Law of Photoionization in Ultrashort Pulses[J]. 中国物理快报, 2006, 23(7): 1803-1805.
ZHANG Xiao-Ming, ZHANG Jing-Tao, BAI Li-Hua, GONG Qi-Huang, XU Zhi-Zhan. A Scaling Law of Photoionization in Ultrashort Pulses. Chin. Phys. Lett., 2006, 23(7): 1803-1805.
2006, Vol. 23 
