Optical coherent detection through multi-scattering media by wave-mixing cleaning effect in liquid-crystal OASLM

S. Residori; U. Bortolozzo; F. Ramaz; J. P. Huignard

doi:10.1117/12.3021833

18 June 2024 Optical coherent detection through multi-scattering media by wave-mixing cleaning effect in liquid-crystal OASLM

S. Residori, U. Bortolozzo, F. Ramaz, J. P. Huignard

Author Affiliations +

Proceedings Volume 13016, Liquid Crystals Optics and Photonic Devices; 130160B (2024) https://doi.org/10.1117/12.3021833
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

Optical coherent detection in non-spatially uniform beams propagating through highly scattering media is achieved by performing wave mixing in an optically addressed spatial light modulator (OASLM) with a contin- uous reference and a speckled signal beam. Thanks to its intrinsic nonlinear dynamics, the OASLM adjusts its properties with sub-ms response time following the phase and intensity changes of the interacting beams. It, therefore, filters out low frequency modulations and noise effects. A phase modulation on the speckled signal is directly transformed into intensity modulation and recorded on the plane reference wave at the exit of the OASLM. Applications include dynamic holography and imaging in biomedical tissues and turbid media.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

S. Residori, U. Bortolozzo, F. Ramaz, and J. P. Huignard "Optical coherent detection through multi-scattering media by wave-mixing cleaning effect in liquid-crystal OASLM", Proc. SPIE 13016, Liquid Crystals Optics and Photonic Devices, 130160B (18 June 2024); https://doi.org/10.1117/12.3021833

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