Below-Threshold High-Harmonic Spectroscopy with Aligned Hydrogen Molecular Ions

Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 125)

Abstract

We present fully ab initio three-dimensional (3D) calculations of high-order harmonic generations (HHG) of aligned hydrogen molecular ions, H\({}_{2}^{+}\), subject to intense linearly-polarized laser pulses. The numerical method is based on the high-precision time-dependent generalized pseudospectral method and the wavelet transform as the tool for time-frequency analysis. We show that the orientation of the molecular axis with respect to the polarization of the laser field strongly affect the electron returning times and below-threshold HHG dynamics. In this study, we find that the short (long) trajectories dominate the emission of below-threshold harmonics when the molecular axis is parallel (perpendicular) to the polarization vector of the laser field.

Keywords

Time Profile Polarization Vector Laser Field Molecular Axis Prolate Spheroidal 
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References

  1. 1.
    D.C. Yost, T.R. Schibli, J. Ye, J.L. Tate, J. Hostetter, M.B. Gaarde, K.J. Schafer, Nat. Phys. 5, 815 (2009)Google Scholar
  2. 2.
    E.P. Power, A.M. March, F. Catoire, E. Sistrunk, K. Krushelnich, P. Agostini, L.F. Dimauro, Nat. Photon. 4, 352 (2010)Google Scholar
  3. 3.
    J.A. Hostetter, J.L. Tate, K.J. Schafer, M.B. Gaarde, Phys. Rev. A 82, 023401 (2010)Google Scholar
  4. 4.
    H. Soifer, P. Botheron, D. Shafir, A. Diner, O. Raz, B.D. Bruner, Y. Mairesse, B. Pons, N. Dudovich, Phys. Rev. Lett. 105, 143904 (2010)Google Scholar
  5. 5.
    D.A. Telnov, S.I. Chu, Phys. Rev. A 76, 043412 (2007)Google Scholar
  6. 6.
    X.M. Tong, S.I. Chu, Chem. Phys. 217, 119 (1997)Google Scholar
  7. 7.
    X.M. Tong, S.I. Chu, Phys. Rev. A 61, 021802 (R) (2000)Google Scholar
  8. 8.
    R. Kopold, W. Becker, M. Kleber, Phys. Rev. A 58, 4022 (1998)Google Scholar
  9. 9.
    P.B. Corkum, Phys. Rev. Lett. 71, 1994 (1993)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of PhysicsNational Taiwan UniversityTaipeiTaiwan (ROC)
  2. 2.Department of PhysicsSt. Petersburg State UniversitySt. PetersburgRussia
  3. 3.Department of ChemistryUniversity of KansasLawrenceUSA

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