Asymmetry in photoelectron angular distributions of Rydberg atoms in circularly polarized few-cycle laser pulses

Abstract

Abstract:

By using a quantum nonperturbative scattering theory, asymmetry in photoionization of high Rydberg states of rubidium atoms in circularly polarized few-cycle microwave frequency laser pulses was investigated. Asymmetry in photoelectron angular distributions was found. The asymmetry is caused by the quantum coherence of different transition channels. Dependence of the asymmetry on carrier-envelope (CE）phase, the pulse duration, and the photoelectron’s energy was discussed. It is found that the asymmetry varies with the CE phase, the pulse duration, and the photoelectron’s energy dramatically. This study confirms the recent experimental finding. It provides an effective means to measure the CE phase and to control the photoelectron angular distributions in microwave frequency optical regime.

Key words: spectroscopy, photoionization, nonperturbative quantum scattering theory, few-cycle laser pulses

CLC Number:

O433.5

BAI Li-hua, CUI Ting-ting, HOU Lu-qiang, WANG Yan, ZHANG Hui-fang. Asymmetry in photoelectron angular distributions of Rydberg atoms in circularly polarized few-cycle laser pulses[J]. J4, 2011, 28(2): 129-135.

References

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