Generation of High Order Harmonics from H2+ Molecule Ion by Using Homogenous and Inhomogeneous Laser Fields

Fatemeh Aghili, Saeed Batebi, Forouq Hosseinzadeh, Department of Physics, University of Guilan,, Department of Physics, University of Guilan,, Department of Physics, University of Guilan,
2019 International Journal of Optics and Photonics  
We solved one dimensional Schrodinger equation in a H2 + molecular environment by using 3 femtosecond homogeneous and nonhomogeneous laser fields. In homogeneous case, we found out that larger inter nuclear distances result in earlier ionization and also more instability in the wave packet. We deducted that the more the instability is, the more modulated the power spectrum will be. So, by choosing a fixed 1.96 atomic units inter nuclear distance, we investigated high harmonic generation in both
more » ... generation in both linear and nonlinear nonhomogeneous laser pulses. We observed that in comparison with the linear case, in nonlinear one, the plateau possessed higher intensity harmonics. On the other hand, in this case, cutoff order occurred on higher frequency. By superposing several harmonics near cutoff region, we predicted the generation of a 73 attosecond pulse.
doi:10.29252/ijop.13.2.135 fatcat:zvhqpzcyfzegjax4vgygibqpe4