Phase dependence of intense field ionization: A study using two colors.
作者： D. W. Schumacher , F. Weihe , H. G. Muller , P. H. Bucksbaum
DOI: 10.1103/PHYSREVLETT.73.1344
关键词: Physics 、 Optical field 、 Ionization 、 Semiclassical physics 、 Atomic physics 、 Asymmetry 、 Light field 、 Omega 、 Photoionization 、 Field desorption
摘要: We present the first measurement of ionization rate from above-threshold (ATI) in an optical field whose phase dependence is known and controllable. Our method uses a harmonic two-color light with calibrated difference between $1\ensuremath{\omega}$ $2\ensuremath{\omega}$ fields. measurements confirm many predictions recent semiclassical theories, but show important discrepancy: An asymmetry ATI rates relative to sign supports recently suggested modifications models include electron-core rescattering during ionization.
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