Observation of Raman optical activity by heterodyne-detected polarization-resolved coherent anti-Stokes Raman scattering.
Phys Rev Lett
; 109(8): 083901, 2012 Aug 24.
Article
em En
| MEDLINE
| ID: mdl-23002745
ABSTRACT
We report the first observation of Raman optical activity (ROA) by coherent anti-Stokes Raman scattering. Thanks to the more freedom of polarization configurations in coherent anti-Stokes Raman scattering than in spontaneous Raman spectroscopy, the contrast ratio of the chiral signal to the achiral background has been improved markedly. For (-)-ß-pinene, it is 2 orders of magnitude better than that in the reported spontaneous ROA measurement. This is also the first measurement of ROA signal using a pulsed laser source.
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MEDLINE
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article