Classical Aspects in Above-Threshold Ionization with a Midinfrared Strong Laser Field

Quan, W.; Lin, Z.; Wu, M.; Kang, H.; Liu, H.; Liu, X.; Chen, J.; Liu, J.; He, X.; Chen, S.; Xiong, H.; Guo, L.; Xu, H.; Fu, Y.; Cheng, Ya; Xu, Zhizhan

doi:10.1103/PhysRevLett.103.093001

Author(s)

Quan, W.

Lin, Z.

Wu, M.

Kang, H.

Liu, H.

Liu, X.

Chen, J.

Liu, J.

He, X.

Chen, S.

Xiong, H.

Guo, L.

Xu, H.

Fu, Y.

Cheng, Ya

Xu, Zhizhan

Griffith University Author(s)

Xu, Han

Year published

2009

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Abstract

We present high resolution photoelectron energy spectra of noble gas atoms from high intensity above-threshold ionization (ATI) at midinfrared wavelengths. An unexpected structure at the very low-energy portion of the spectra, in striking contrast to the prediction of the simple-man theory, has been revealed. A semiclassical model calculation is able to reproduce the experimental feature and suggests the prominent role of the Coulomb interaction of the outgoing electron with the parent ion in producing the peculiar structure in long wavelength ATI spectra.We present high resolution photoelectron energy spectra of noble gas atoms from high intensity above-threshold ionization (ATI) at midinfrared wavelengths. An unexpected structure at the very low-energy portion of the spectra, in striking contrast to the prediction of the simple-man theory, has been revealed. A semiclassical model calculation is able to reproduce the experimental feature and suggests the prominent role of the Coulomb interaction of the outgoing electron with the parent ion in producing the peculiar structure in long wavelength ATI spectra.
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