Skip to Main content Skip to Navigation
Journal articles

Polarization-resolved pump-probe spectroscopy with high harmonics

Abstract : High harmonic generation in gases can be used as a probe of the electronic structure of the emitting medium, with attosecond temporal resolution and angstrom spatial resolution. The prospect of measuring molecular dynamics by pump-probe spectroscopy with such precision is attracting a lot of interest. An important issue in pump-probe spectroscopy lies in the ability to detect small signals: the detected signal can be easily dominated by the contributions from non-excited molecules or from a carrier gas. In this paper, we demonstrate that polarization-resolved pump-probe spectroscopy can be used to overcome this issue. We study high harmonic generation from rotationally excited molecules. We show that by measuring the harmonic field that is generated orthogonally to the driving laser field, the contrast in the detection of alignment revivals in nitrogen can be increased by a factor 4. We use this configuration to measure alignment revivals in an argon-nitrogen mixture, in which the total harmonic signal is dominated by the contributions from argon.
Document type :
Journal articles
Complete list of metadata

Cited literature [18 references]  Display  Hide  Download
Contributor : Marianne Leriche Connect in order to contact the contributor
Submitted on : Friday, June 27, 2008 - 7:00:14 AM
Last modification on : Tuesday, March 29, 2022 - 3:01:50 AM
Long-term archiving on: : Thursday, May 20, 2010 - 10:35:54 PM


Publisher files allowed on an open archive





Y. Mairesse, Stefan Haessler, B. Fabre, J. Higuet, W. Boutu, et al.. Polarization-resolved pump-probe spectroscopy with high harmonics. New Journal of Physics, Institute of Physics: Open Access Journals, 2008, 10 (2), pp.025028. ⟨10.1088/1367-2630/10/2/025028⟩. ⟨cea-00267577⟩



Record views


Files downloads