High order harmonic generation in triatomic molecules
S. Barmaki*, S. Laulan
Secteur Sciences, Université de Moncton-campus de Shippagan,
218 boulevard J. D. Gauthier, Shippagan, New-Brunswick,
* Corresponding author. E-mail: email@example.com
Received: 20 November 2008; revised version accepted: 10 June 2009
We present a study of the nonlinear process of the high order harmonic generation (HHG) in the H32+ triatomic molecular hydrogen ion submitted to 20-cycle intense laser pulse of intensity I = 4 ´ 1014 Wcm-2 and wavelength ? = 800 nm. The HHG spectra are calculated numerically by resolving the 3-D time-dependent Schrödinger equation describing the electron motion in the presence of laser pulse using the split-operator technique. Results for several internuclear distances between the H32+ fragments are presented. The extension of the HHG cutoff compared to the atomic case is discussed.
Keywords : Nonlinear processes; High order harmonic generation ; Molecular triatomic ion; numerical simulation; Laser control.