Angular distributions of high-intensity ATI and the onset of the plateau

Abstract

Using a 110 fs, 800 nm Ti:sapphire laser, we have collected angle-resolved, highresolution (< 25 meV) photoelectron kinetic energy spectra of xenon for multiple intensities in the range 10 13 -10 14 W cm −2 . For various ATI peaks, we present angular distributions, which show complex and varied structures not previously reported or predicted. For each intensity, abrupt variations in the structures of the angular distributions coincide energetically with the onset of the plateau region in the photoelectron spectra.

The plateau in above-threshold ionization: the keystone of rescattering physics

“…This provides an explanation of one of the most conspicuous features of the ATI plateau, viz. the appearance of groups of peaks with enhanced yield and increased contrast in the spectrum [123][124][125][126][127][128][129]. Namely, in general, the ATI peaks are located at the energies…”

Classical calculation of high-order harmonic generation of atomic and molecular gases in intense laser fields

“…in ATI spectra have been detailed in Ref. [6][7][8]. The above threshold dissociation (ATD) and dissociation-ionization of molecular systems are also reported [9][10].…”

“…The development of the high-power femtosecond laser has stimulated the investigation of the multi-photon processes of atoms and molecules interacting with intense laser fields [1][2][3][4][5][6][7][8][9].…”

Intensity-dependent interference effect in high-order harmonic generation from alignedH2 +molecules

“…The nonperturbative quantum electrodynamics theory developed by Guo et al [20] made a notable success in explanation of the strong-field phenomena such as the angular splitting observed by Bucksbaum et al [21] (see also [22]) and the jetlike structure in photoelectron angular distributions observed by Nandor et al [23] (see also [24]). In the framework of this theory, Gao et al [25] derived a quantum scattering theory of HHG.…”