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Vibrational circular dichroism signal enhancement using self-heterodyning with elliptically polarized laser pulses

J. Chem. Phys. 131, 174507 (2009); doi:10.1063/1.3256224

Published 3 November 2009

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Jan Helbing and Mathias Bonmarin
Physikalisch-Chemisches Institut, Winterthurerstrasse 190, 8057 Zürich, Switzerland
Vibrational circular dichroism (VCD) spectra were recorded using elliptically polarized ultrashort laser pulses, produced with the help of a photoelastic modulator. The short polarization axis of the elliptical light acts as a phase-locked local oscillator field, heterodyning the chiral signal generated by the field along the long polarization axis. This leads to VCD signals that increase linearly with the ellipticity of the probe pulses and enhanced signal to noise, which is expected to improve recently reported transient VCD scans. An analogous scheme allows for vibrational optical rotary dispersion measurements. The techniques are compared with similar approaches using both a linear response picture and the Jones matrix calculus. ©2009 American Institute of Physics
History: Received 30 July 2009; accepted 22 September 2009; published 3 November 2009
Permalink: http://link.aip.org/link/?JCPSA6/131/174507/1
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KEYWORDS and PACS

Keywords
PACS
  • 33.55.+b
    Optical activity and dichroism (molecules)
  • 33.20.Tp
    Vibrational analysis (molecular spectra)
  • 33.15.Mt
    Molecular rotation, vibration, and vibration-rotation constants
  • 33.15.Bh
    General molecular conformation and symmetry; stereochemistry
  • YEAR: 2009

PUBLICATION DATA

ISSN:
0021-9606 (print)   1089-7690 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (29)
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