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Title: Effect of Nuclear Motion on Molecular High-Order Harmonics and on Generation of Attosecond Pulses in Intense Laser Pulses

Abstract

We calculate harmonic spectra and shapes of attosecond-pulse trains using numerical solutions of Non-Born-Oppenheimer time-dependent Shroedinger equation for 1D H{sub 2} molecules in an intense laser pulse. A very strong signature of nuclear motion is seen in the time profiles of high-order harmonics. In general the nuclear motion shortens the part of the attosecond-pulse train originating from the first electron contribution, but it may enhance the second electron contribution for longer pulses. The shape of time profiles of harmonics can thus be used for monitoring the nuclear motion.

Authors:
; ; ;  [1]
  1. Departement de Chimie, Universite de Sherbrooke, Sherbrooke, Qc, J1K 2R1 (Canada)
Publication Date:
OSTI Identifier:
21179799
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 101; Journal Issue: 15; Other Information: DOI: 10.1103/PhysRevLett.101.153901; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BORN-OPPENHEIMER APPROXIMATION; ELECTRONS; EQUATIONS; HARMONICS; HYDROGEN; LASERS; NUMERICAL SOLUTION; PULSES; TIME DEPENDENCE

Citation Formats

Bandrauk, Andre D, Chelkowski, Szczepan, Kawai, Shinnosuke, and Lu, Huizhong. Effect of Nuclear Motion on Molecular High-Order Harmonics and on Generation of Attosecond Pulses in Intense Laser Pulses. United States: N. p., 2008. Web. doi:10.1103/PHYSREVLETT.101.153901.
Bandrauk, Andre D, Chelkowski, Szczepan, Kawai, Shinnosuke, & Lu, Huizhong. Effect of Nuclear Motion on Molecular High-Order Harmonics and on Generation of Attosecond Pulses in Intense Laser Pulses. United States. doi:10.1103/PHYSREVLETT.101.153901.
Bandrauk, Andre D, Chelkowski, Szczepan, Kawai, Shinnosuke, and Lu, Huizhong. Fri . "Effect of Nuclear Motion on Molecular High-Order Harmonics and on Generation of Attosecond Pulses in Intense Laser Pulses". United States. doi:10.1103/PHYSREVLETT.101.153901.
@article{osti_21179799,
title = {Effect of Nuclear Motion on Molecular High-Order Harmonics and on Generation of Attosecond Pulses in Intense Laser Pulses},
author = {Bandrauk, Andre D and Chelkowski, Szczepan and Kawai, Shinnosuke and Lu, Huizhong},
abstractNote = {We calculate harmonic spectra and shapes of attosecond-pulse trains using numerical solutions of Non-Born-Oppenheimer time-dependent Shroedinger equation for 1D H{sub 2} molecules in an intense laser pulse. A very strong signature of nuclear motion is seen in the time profiles of high-order harmonics. In general the nuclear motion shortens the part of the attosecond-pulse train originating from the first electron contribution, but it may enhance the second electron contribution for longer pulses. The shape of time profiles of harmonics can thus be used for monitoring the nuclear motion.},
doi = {10.1103/PHYSREVLETT.101.153901},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 15,
volume = 101,
place = {United States},
year = {2008},
month = {10}
}