Implementation of a high-resolution two-color spectrometer for rotational coherence spectroscopy in the picosecond time domain

Review of Scientific Instruments

Volumn 72, Issue 6, 2001, Pages 2697-2708

  Weichert, Andreas ^a   Riehn, Christoph ^a   Barth, Hans Dieter ^a   Lembach, Gerhard ^a   Zimmermann, Marcus ^a   Brutschy, Bernhard ^a   Podenas, Donatas ^b  

^a GOETHE UNIVERSITY   (Germany)

^b VILNIUS UNIVERSITY   (Lithuania)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035363106     PISSN: 00346748     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.1370559     Document Type: Article

References (40)

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26. air=1.000 28. This correction of 0.28‰ with respect to the speed of light in vacuum results in an additional delay of 2 ps in 8 ns.
27. An interesting and more direct energy normalization scheme has been used successfully by Lee and co-workers in their IR-UV double resonance investigation of benzene and benzene dimer (Ref. 39). They used a time-of-flight mass spectrometer and IR and UV laser radiation in a two beam scheme with identical samples, one beam consisting of IR and UV light and the other only of UV light. Focused on slightly different positions in the ionization region of the mass spectrometer, separated peaks of the front and back focus have been obtained. The signal-to-noise ratio could be significantly improved by monitoring both peaks simultaneously. Later, this scheme has been successfully applied by Felker and co-workers for ionization detected stimulated Raman spectroscopy (Ref. 40). A similar scheme could be used for RCS experiments involving a time-of-flight mass spectrometer - like in (1+1′) PPI. In this case one focus could contain pump and probe pulse with parallel relative polarizations and the other focus pump and probe pulse with perpendicular relative polarizations.
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