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Updated: Apr 25, 2026

Direct Comparison of Hyperspectral Stimulated Raman Scattering and Coherent Anti-Stokes Raman Scattering Microscopy for Chemical Imaging
Published on: April 28, 2022
Spectral interferometric implementation with passive polarization optics of coherent anti-Stokes Raman scattering
Brad Littleton1, Thomas Kavanagh1, Frederic Festy2
1Department of Physics, King's College London, Strand, London, WC2R 2LS, United Kingdom.
Abstract:
We have developed an interferometric implementation of coherent anti-Stokes Raman scattering which enables broadband coherent Raman spectroscopy free from the nonresonant background, with a signal strength proportional to concentration. Spectra encode mode symmetry information into the amplitude response, which can be directly compared to polarized spontaneous Raman spectra. The method requires only passive polarization optics and is suitable for a wide range of laser linewidths and pulse durations. The method's application to Raman spectral imaging is demonstrated.
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