Abstract
In accordance with nonperturbative quantum scattering theory, we investigate
photoelectron angular distributions (PADs) from above-threshold detachment (ATD) of
negative ions irradiated by circularly polarized few-cycle laser fields. Electrons
ejected on the polarization plane demonstrate distinct anisotropies in angular
distributions which distinctly vary with the carrier-envelope (CE) phase. The
anisotropy is caused by interference between transition channels; it also depends
strongly on laser frequency, pulse duration, and kinetic energy of photoelectrons.
Optimal emission of photoelectrons, which varies with CE phase, makes it possible to
control photoelectron motion.
© 2011 Chinese Optics Letters
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