Real-time acousto-optic imaging using high-peak-power long-pulsed illumination

Acousto-optic imaging (AOI) of absorbing objects embedded in highly scattering media remains challenging, since the detectable signal suitable for image reconstruction is weak. To increase the detected signals to a level required by live biological applications, we designed a high-peak-power quasi-c...

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Bibliographic Details
Published in:Optics letters 2024-11, Vol.49 (21), p.5993
Main Authors: Figliolia, François, Liu, Qin, Janicot, Sylvie, Georges, Patrick, Lucas-Leclin, Gaëlle, Huignard, Jean-Pierre, Ramaz, François, Tualle, Jean-Michel, Bocoum, Maïmouna
Format: Article
Language:English
Subjects:
Acousto-optics
Digital imaging
Engineering Sciences
Fourier transforms
Image reconstruction
Optics
Photonic
Physics
Scattering
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Summary:Acousto-optic imaging (AOI) of absorbing objects embedded in highly scattering media remains challenging, since the detectable signal suitable for image reconstruction is weak. To increase the detected signals to a level required by live biological applications, we designed a high-peak-power quasi-continuous laser source based on the coherent combination of two pulsed amplifiers, delivering 100-µs-long pulses with a 9 W peak power at a 100 Hz repetition rate while maintaining an average power below 100 mW; jointly used with a digital holographic detection that maximizes the amount of collected signal, we demonstrate for the first time to our knowledge the optical imaging of 2-cm-thick highly scattering media (µ ' ∼ 10 cm ) at near-video frame rate (0.2 Hz) using the Fourier transform-AOI.
ISSN:0146-9592
1539-4794
1539-4794
DOI:10.1364/OL.528953