Above-Threshold Ionization of Xenon by Chirped Intense Laser Pulses
WANG Chuan-Liang1,2, SUN Ren-Ping1,2, CHEN Yong-Ju1,2, GONG Cheng1, LAI Xuan-Yang1, KANG Hui-Peng1, QUAN Wei1, LIU Xiao-Jun1**
1State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 2University of Chinese Academy of Sciences, Beijing 100090
Abstract：We experimentally investigate above-threshold ionization of xenon subject to chirped intense laser pulses. While for few-cycle laser pulses free of chirp, the Freeman resonance narrow peaks in the photoelectron spectra become strongly suppressed, they will re-emerge for laser pulses with a certain chirp. Moreover, the position of the resonant peaks exhibits a strong dependence on the direction of the chirp. The experimental features can be understood by a two-step ionization process; that is, a multi-photon excitation plus subsequent ionization process.
(Strong-field excitation of optical transitions in quantum systems; multiphoton processes; dynamic Stark shift)
引用本文:
. [J]. 中国物理快报, 2014, 31(06): 63202-063202.
WANG Chuan-Liang, SUN Ren-Ping, CHEN Yong-Ju, GONG Cheng, LAI Xuan-Yang, KANG Hui-Peng, QUAN Wei, LIU Xiao-Jun. Above-Threshold Ionization of Xenon by Chirped Intense Laser Pulses. Chin. Phys. Lett., 2014, 31(06): 63202-063202.
2014, Vol. 31 
