A new high-frequency photoacoustic sensing probe (PAS) using silicon acoustic delay lines (SADLs)

Arif Kivanc Ustun; Jun Zou

doi:10.1117/12.2582745

5 March 2021 A new high-frequency photoacoustic sensing probe (PAS) using silicon acoustic delay lines (SADLs)

Arif Kivanc Ustun, Jun Zou

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 1164224 (2021) https://doi.org/10.1117/12.2582745
Event: SPIE BiOS, 2021, Online Only

Abstract

In this paper, we report a high-frequency photoacoustic sensing (PAS) probe design consisting of an optical fiber for light delivery and two silicon acoustic delay lines (SADLs) for detecting/relaying the PA signals. A beveled tip is formed at the distal end of the optical fiber to overlap the illumination region with the detection zone of the SADLs. Detected PA signals are transmitted through the SADLs with low loss at frequencies up to 17 MHz. For demonstration, a prototype PAS probe using SADLs is designed, fabricated, and tested. Testing results show that the PAS probe provides superior sensitivity with considerable high-frequency improvement.

Conference Presentation

Citation Download Citation

Arif Kivanc Ustun and Jun Zou "A new high-frequency photoacoustic sensing probe (PAS) using silicon acoustic delay lines (SADLs)", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 1164224 (5 March 2021); https://doi.org/10.1117/12.2582745

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