2010/04/12 by Yang Xiang, Xiang, Yang, Yueping Niu +5
Engineering · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic and Molecular Physics #FOS: Physical sciences #Laser Design and Applications #Laser-Matter Interactions and Applications #Optics (physics.optics) #physics.atom-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1004.1867
5 pages, 3 figures
arxiv created 2010/04/12 · openalex publication_date 2010/04/12 · arxiv updated 2010/04/13 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
With the development of laser technology, pulse length enters the optical cycle regime and hence the interaction time between laser pulse and atoms becomes prominent. We investigate this problem in this Letter through the photoelectron spectrum of hydrogen atom in few-cycle xuv laser pulses. By solving one-dimensional time-dependent Schrödinger equation, we find that due to the insufficient interaction time, the electron can not gain enough energy from optical field when escaping the bind of the nuclear and then the abnormality appears in the photoelectron spectrum: the peak of photoelectron spectrum shows red shift compared with the well-known Einstein photo-electric effect formula. The shift becomes large as the pulse duration decreases.