Carrier-envelope phase dependence of molecular harmonic spectral minima induced by mid-infrared laser pulses | Zendy

Pidong Hu | Zendy; Yueping Niu | Zendy; Yang Xiang | Zendy; Shangqing Gong | Zendy; Chengpu Liu | Zendy

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Carrier-envelope phase dependence of molecular harmonic spectral minima induced by mid-infrared laser pulses

Author(s) -

Pidong Hu,

Yueping Niu,

Yang Xiang,

Shangqing Gong,

Chengpu Liu

Publication year - 2015

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.23.023834

Subject(s) - carrier envelope phase , physics , laser , maxima and minima , high harmonic generation , envelope (radar) , harmonic , optics , interference (communication) , wavelength , born–oppenheimer approximation , infrared , phase (matter) , harmonic spectrum , spectral envelope , quantum mechanics , mathematical analysis , radar , telecommunications , channel (broadcasting) , mathematics , electrical engineering , molecule , computer science , engineering

The spectral minima in harmonic spectra of H2+ induced by mid-infrared laser pulses are numerically investigated based on two models of Born-Oppenheimer (BO) and non-Born-Oppenheimer (NBO) approximations. The simulation results show that, with the variation of the mid-infrared laser's carrier-envelope phase (CEP), the spectral minima positions (SMPs) are fixed for the BO model, while oscillate periodically for the NBO model. This can be understood by the two-center-destructive-interference theory via the detailed investigation to several physical quantities for each CEP case, such as SMPs, effective potential, internuclear separation and the electron's de Broglie wavelength at the time for interference occurring. The fittings to these quantities' CEP-dependent curves demonstrate that they follow a variation law in the form of a sine function.

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