Chirp-dependent ionization of hydrogen atoms in the presence of super-intense laser pulses |
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| Affiliation: | 1.Institute of Atomic and Molecular Physics, Jilin University, Changchun 130012, China;2.School of Mathematics and Physics, Hubei Polytechnic University, Huangshi 435003, China;3.College of Physics, Jilin University, Changchun 130012, China |
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| Abstract: | We perform a theoretical study on dynamic interference in single photon ionization of ground state hydrogen atoms in the presence of a super-intense ultra-fast chirped laser pulse of different chirp types (equal-power and equal-FWHM laser pulses) by numerically solving the time-dependent Schrödinger equation in one dimension. We investigate the influences of peak intensity and chirp parameters on the instantaneous ionization rate and photoelectron yield, respectively. We also compare the photoelectron energy spectra for the ionization by the laser pulses with different chirp types. We find that the difference between the instantaneous ionization rates for the ionization of hydrogen atom driven by two different chirped laser pulses is originated from the difference in variation of vector potentials with time. |
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| Keywords: | ultrafast laser field single photon ionization quantum interference |
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