High-contrast pump-probe spectroscopy with high-order harmonics

DOIResolve DOI: http://doi.org/10.1051/uvx/2009017
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TypeArticle
Proceedings titleUVX 2008 - 9e Colloque sur les Sources Coherentes et Incoherentes UV, VUV et X: Applications et Developpements Recents
Conference9e Colloque sur les Sources Coherentes et Incoherentes UV, VUV et X: Applications et Developpements Recents, UVX 2008 - 9th Symposium on Sources Consistent and Inconsistent UV, VUV and X: Recent Developments and Applications, UVX 2008, 7 October 2008 through 10 October 2008, Dourdan
Pages107111; # of pages: 5
SubjectHarmonic generation; Molecular dynamics; Molecules; Probes; High order harmonic generation; High order harmonics; High spatial resolution; Measured signals; Measurements of; Pump probe measurement; Pump-probe spectroscopy; Transient grating spectroscopy; Pumps
AbstractThe high order harmonic generation process from molecules can be used to probe the structure of the emitting medium with high spatial resolution [1, 2]. The measurements of molecular dynamics with such a probe is thus very appealing. Contrast is an important issue in pump probe spectroscopy: in general the probe only excites part of the molecules, so that the detected signal can be dominated by contributions from non-excited molecules. In this article we review two techniques that can be used to enhance the contrast of pump probe measurements: transient grating spectroscopy and polarization-resolved spectroscopy. We use these techniques to detect rotational wavepackets and demonstrate a dramatic improvement in the contrast of the measured signal. © EDP Sciences, 2009.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Steacie Institute for Molecular Sciences
Peer reviewedYes
NPARC number21276181
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Record identifierb663ac52-4ac1-41e2-abe8-3a0de7b31a17
Record created2015-09-28
Record modified2016-05-09
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