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arXiv · 2402.07006

Low frequency coherent Raman imaging robust to optical scattering

David R. Smith·Jesse W. Wilson·Siddarth Shivkumar·Herve Rigneault·Randy A. Bartels
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Abstract

We demonstrate low-frequency interferometric impulsive stimulated Raman scattering (ISRS) imaging with high robustness to distortions by optical scattering. ISRS is a pump-probe coherent Raman spectroscopy that can capture Raman vibrational spectra. Recording of ISRS spectra requires isolation of a probe pulse from the pump pulse. While this separation is simple in non-scattering specimens, such as liquids, scattering leads to significant pump pulse contamination and prevent the extraction of a Raman spectrum. We introduce a robust method for ISRS microscopy that works in complex scattering samples. High signal-to-noise ISRS spectra are obtained even when the pump and probe pulses pass through many scattering layers.

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David R. Smith, Jesse W. Wilson, Siddarth Shivkumar, Herve Rigneault, Randy A. Bartels. 2024-02-10. Low frequency coherent Raman imaging robust to optical scattering. https://arxiv.org/abs/2402.07006

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