Paper
15 March 2023 Polarization gated Brillouin spectroscopy: new perspectives for turbid media analysis
Author Affiliations +
Abstract
The multiple scattering (MS) process affects the spectroscopic investigation and the optical imaging of opaque samples. In Brillouin spectroscopy, MS affects the extraction of reliable micromechanical parameters inducing the ill definition of the exchanged wavevector of the scattering process, q. Here, we propose a new experimental method called Polarization Gated Brillouin Spectroscopy (PG-BS) able to disentangle the MS and the ballistic contributions. The results obtained on milk, used as benchmark material, demonstrate both the capability and easy applicability of the proposed method. Exploiting PG-BS for different biological materials can open the route to new frontiers in Brillouin imaging of opaque samples.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. Caponi, G. Capponi, M. A. Cardinali, A. A. Passeri, D. Fioretto, and M. Mattarelli "Polarization gated Brillouin spectroscopy: new perspectives for turbid media analysis", Proc. SPIE 12381, Optical Elastography and Tissue Biomechanics X, 1238107 (15 March 2023); https://doi.org/10.1117/12.2655239
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KEYWORDS
Spectroscopy

Light scattering

Polarization

Turbidity

Biological samples

Scattering

Multiple scattering

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