All-optical focused ultrasound detector for intravascular applications

Michael Nagli; Jürgen Koch; Yoav Hazan; Oleg Volodarsky; Resmi Ravi Kumar; Ahiad Levi; Evgeny Hahamovich; Ludger Overmeyer; Amir Rosenthal

doi:10.1117/12.2577228

5 March 2021 All-optical focused ultrasound detector for intravascular applications

Michael Nagli, Jürgen Koch, Yoav Hazan, Oleg Volodarsky, Resmi Ravi Kumar, Ahiad Levi, Evgeny Hahamovich, Ludger Overmeyer, Amir Rosenthal

Author Affiliations +

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 116421U (2021) https://doi.org/10.1117/12.2577228
Event: SPIE BiOS, 2021, Online Only

Abstract

One of the main challenges in intravascular photoacoustic (IVPA) imaging is the limited sensitivity and bandwidth of miniaturized piezoelectric probes. Optical detectors of ultrasound can drastically improve both these features, but often lack acoustic focusing. In this work, we developed a focused ultrasound detector by integrating a miniaturized acoustic lens, made out of glass, with a silicon-photonics-based detector. A detection bandwidth of up to 80 MHz and lateral resolution beyond 50 µm was demonstrated with a lens diameter of 0.8 mm. Our device is transparent in the near-infrared window, simplifying its integration in a miniaturized IVPA probe.

Conference Presentation

Citation Download Citation

Michael Nagli, Jürgen Koch, Yoav Hazan, Oleg Volodarsky, Resmi Ravi Kumar, Ahiad Levi, Evgeny Hahamovich, Ludger Overmeyer, and Amir Rosenthal "All-optical focused ultrasound detector for intravascular applications", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 116421U (5 March 2021); https://doi.org/10.1117/12.2577228

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