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Updated: May 18, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
Observation of Raman optical activity by heterodyne-detected polarization-resolved coherent anti-Stokes Raman
Kotaro Hiramatsu1, Masanari Okuno, Hideaki Kano
1Department of Chemistry, School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
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 (-)-β-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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