2014/09/30 by Xosé Luís Deán‐Ben, X. Luís Deán-Ben, Héctor Estrada +1
Engineering · Physics and Astronomy · #Acoustics #Artificial intelligence #Biophotonics #Computer science #Control engineering #Engineering #Feedback control #Laser #Optical Coherence Tomography Applications #Optics #Optoacoustic imaging #Photoacoustic and Ultrasonic Imaging #Physics #Random lasers and scattering media #Wavefront #physics.optics
paper · pdf · doi:10.1364/ol.40.000443
published as Optics Letters, Vol. 40, Issue 4, pp. 443-446 (2015) · 4 pages, 3 figures
openalex publication_date 2015/01/30 · arxiv created 2015/02/02 · arxiv updated 2015/02/03 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
Focusing light through turbid media represents a highly fascinating challenge in modern biophotonics. The unique capability of opto-acoustics for high-resolution imaging of light absorption contrast in deep tissues can provide a natural and efficient feedback to control light delivery in a scattering medium. While the basic feasibility of using opto-acoustic readings as a feedback mechanism for wavefront shaping has been recently reported, the suggested approaches may require long acquisition times, making them challenging to be translated into realistic tissue environments. In an attempt to significantly accelerate dynamic wavefront shaping capabilities, we present here a feedback-based approach using real-time three-dimensional opto-acoustic imaging assisted with genetic-algorithm-based optimization. The new technique offers robust performance in the presence of noisy measurements and can simultaneously control the scattered wave field in an entire volumetric region.