|DOI||Resolve DOI: https://doi.org/10.1051/uvx/2009017|
|Author||Search for: Mairesse, Y.; Search for: Boutu, W.; Search for: Breger, P.; Search for: Constant, E.; Search for: Descamps, D.; Search for: Dudovich, N.; Search for: Fabre, B.; Search for: Haessler, S.; Search for: Higuet, J.; Search for: Mével, E.; Search for: Petit, S.; Search for: Salières, P.; Search for: Villeneuve, D.M.1; Search for: Corkum, P.B.1|
- National Research Council of Canada. NRC Steacie Institute for Molecular Sciences
|Conference||9e 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|
|Subject||harmonic 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|
The 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.
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