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Author Spotlight: A Stable Phantom Material for Optical and Acoustic Imaging
Published on: June 16, 2023
Controlling light in complex media beyond the acoustic diffraction-limit using the acousto-optic transmission matrix
Ori Katz1,2,3, François Ramaz4, Sylvain Gigan5
1Department of Applied Physics, The Hebrew University of Jerusalem, 9190401, Jerusalem, Israel. orik@mail.huji.ac.il.
This study introduces the acousto-optic transmission matrix (AOTM) to overcome light scattering challenges in complex samples. The AOTM enables precise light control and focusing beyond acoustic limits, improving internal sample imaging.
Area of Science:
- Optics
- Acoustics
- Biomedical Imaging
Background:
- Light scattering significantly hinders internal imaging of complex samples.
- Retrieving scattering matrices typically requires invasive detectors, limiting applications.
- Current methods use focused ultrasound for acousto-optic guide-stars.
Purpose of the Study:
- Introduce the acousto-optic transmission matrix (AOTM) as a novel framework.
- Provide a generalized method for analyzing acousto-optic techniques.
- Enable light control and focusing beyond the acoustic diffraction limit.
Main Methods:
- Developed the acousto-optic transmission matrix (AOTM).
- Experimentally demonstrated complex light control using AOTM singular vectors.
- Analyzed acousto-optic guided focusing resolution limitations within the AOTM framework.
Main Results:
- The AOTM acts as an ultrasonically-encoded, spatially-resolved optical scattering matrix.
- Successfully achieved complex light control and focusing beyond the acoustic diffraction limit.
- Provided a framework for analyzing and improving acousto-optic imaging resolution.
Conclusions:
- The AOTM offers a generalized approach for acousto-optic techniques.
- Enables advanced light manipulation for imaging deep within scattering media.
- Paves the way for enhanced resolution in acousto-optic guided focusing.
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