Due to multiple scattering (MS), Brillouin spectroscopy is currently limited to analyzing transparent materials or the surface of opaque samples. To favor the applications toward in-depth 3D analysis, we provide a new analytic expression and an innovative experimental method to isolate the MS effect. The analytic model, derived from a fundamental description of the interaction process, compares well with a new experimental method, named polarization gated Brillouin spectroscopy, which selects the MS contribution through light polarization. Both experimental and analytic methods are tested against a benchmark material, milk, demonstrating their capability to extract reliable micromechanical parameters even for the in-depth investigation of highly turbid material.

Disentanglement of Multiple Scattering Contribution in Brillouin Microscopy

Maurizio Mattarelli
;
Giulio Capponi;Alessandra Anna Passeri;Daniele Fioretto;
2022

Abstract

Due to multiple scattering (MS), Brillouin spectroscopy is currently limited to analyzing transparent materials or the surface of opaque samples. To favor the applications toward in-depth 3D analysis, we provide a new analytic expression and an innovative experimental method to isolate the MS effect. The analytic model, derived from a fundamental description of the interaction process, compares well with a new experimental method, named polarization gated Brillouin spectroscopy, which selects the MS contribution through light polarization. Both experimental and analytic methods are tested against a benchmark material, milk, demonstrating their capability to extract reliable micromechanical parameters even for the in-depth investigation of highly turbid material.
2022
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11391/1536053
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 8
social impact