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Efficient high harmonic generation of bromine molecule by controlling the carrier-envelope phase and polarization of driving laser pulse

Irani, E ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1016/j.cplett.2019.01.048
  3. Publisher: Elsevier B.V , 2019
  4. Abstract:
  5. The generation of ultrashort attosecond pulse requires both an enhanced high harmonic generation and the spectral-phase control. In the present work, an efficient method is theoretically investigated for extending HHG cutoff energy in Br2 molecule using TDDFT. The effects of molecular orientation and carrier-envelope phase of the laser on the high harmonic spectrum are analyzed. As a result, by the fine modulations of the laser field, the harmonic plateau is enlarged and the position of structure-induced interference minimum shifts. We also provide a physical picture on the intensity dependence of the spectral minima in the harmonic spectra
  6. Keywords:
  7. Attosecond pulse ; Bromine molecule ; Carrier envelope phase ; High harmonic generation ; Polarization ; Bromine ; Harmonic generation ; Molecular orientation ; Molecules ; Carrier-envelope phase ; Cutoff energies ; Harmonic spectrum ; High-harmonic spectrum ; Intensity dependence ; Physical pictures ; Harmonic analysis
  8. Source: Chemical Physics Letters ; Volume 719 , 2019 , Pages 27-33 ; 00092614 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/abs/pii/S0009261419300831