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Article Dans Une Revue Biomedical optics express Année : 2021

Controlling the optical pathlength in continuous-wave reflectance spectroscopy using polarization

Susmita Sridhar
  • Fonction : Auteur
Hung T X Do
  • Fonction : Auteur
Javier Luna-Labrador
  • Fonction : Auteur
Mouloud Adel
GSM
Anabela da Silva

Résumé

We investigate potential improvements of continuous-wave diffuse reflectance spectroscopy within highly scattering media by employing polarization gating. Simulations are used to show the extent at which the effective optical pathlength varies in a typical scattering medium as a function of the optical wavelength, the total level of absorption, and the selected polarization channels, including elliptical and circular polarization channels. Experiments then demonstrate that a wavelength dependent polarization gating scheme may reduce the prior knowledge required to solve the problem of chromophore quantification. This is achieved by finding combinations of polarization channels which have similar effective optical pathlengths through the medium at each wavelength.
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Dates et versions

hal-03271271 , version 1 (25-06-2021)

Identifiants

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Callum M Macdonald, Susmita Sridhar, Hung T X Do, Javier Luna-Labrador, Mouloud Adel, et al.. Controlling the optical pathlength in continuous-wave reflectance spectroscopy using polarization. Biomedical optics express, 2021, 12 (7), pp.4401-4413. ⟨10.1364/boe.426627⟩. ⟨hal-03271271⟩
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