Analyzing helicity-based images of backscattered circularly polarized light and the effects of scatterer size and turbidity

Michael Singh; Alex Vitkin

doi:10.1117/12.2655139

7 March 2023 Analyzing helicity-based images of backscattered circularly polarized light and the effects of scatterer size and turbidity

Michael Singh, Alex Vitkin

Author Affiliations +

Proceedings Volume PC12377, Optical Interactions with Tissue and Cells XXXIV; PC123770A (2023) https://doi.org/10.1117/12.2655139
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

Light’s helicity refers to the right- or left-handed spin direction of its electric field vector. Light backscattered from incident circularly polarized light upon turbid media typically consists of two sub-populations: photons which have orthogonal (flipped) and parallel (preserved) helicities with respect to the incident state. The flipped and preserved intensities are found to be acutely sensitive to average scatterer size and modestly sensitive to turbidity through an interplay of single and multiple scattering effects. Using a highly sensitive intensified-CCD camera, we perform a novel experimental study on helicity-based images of backscattered light, enabling (1) investigation of photonic pathways and (2) extraction of metrics which provide scatterer size and turbidity information about tissue-like media. An exciting potential application of this work is early cancer detection since malignant tissues have been observed to increase in in scatterer size and turbidity.

Conference Presentation

Citation Download Citation

Michael Singh and Alex Vitkin "Analyzing helicity-based images of backscattered circularly polarized light and the effects of scatterer size and turbidity", Proc. SPIE PC12377, Optical Interactions with Tissue and Cells XXXIV, PC123770A (7 March 2023); https://doi.org/10.1117/12.2655139

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