Ultrasound modulation for direct light focusing inside scattering media

Blanca Mestre-Torà; Martí Duocastella

doi:10.1117/12.3003755

13 March 2024 Ultrasound modulation for direct light focusing inside scattering media

Blanca Mestre-Torà, Martí Duocastella

Proceedings Volume PC12851, Adaptive Optics and Wavefront Control for Biological Systems X; PC128510F (2024) https://doi.org/10.1117/12.3003755
Event: SPIE BiOS, 2024, San Francisco, California, United States

Abstract

Light-based methods are fundamental in biomedical and life sciences as non-invasive diagnostic and treatment tools. However, the scattering nature of biological tissue limits the maximum depth at which they can operate – typically, below one millimeter. Here, we show how ultrasound waves inside a resonant cavity can locally modulate the optical properties of a turbid medium. In agreement with Monte Carlo simulations, our experimental results demonstrate, at an optical density of 15, an enhancement in light confinement up to a factor of 7 compared to conventional methods.

Conference Presentation

Citation Download Citation

Blanca Mestre-Torà and Martí Duocastella "Ultrasound modulation for direct light focusing inside scattering media", Proc. SPIE PC12851, Adaptive Optics and Wavefront Control for Biological Systems X, PC128510F (13 March 2024); https://doi.org/10.1117/12.3003755

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