Microscale photoacoustic spectroscopy using integrated photonics for lab-on-chip applications

Robin Singh; Anu Agarwal; Brian W. Anthony

doi:10.1117/12.2579018

5 March 2021 Microscale photoacoustic spectroscopy using integrated photonics for lab-on-chip applications

Robin Singh, Anu Agarwal, Brian W. Anthony

Author Affiliations +

Proceedings Volume 11642, Photons Plus Ultrasound: Imaging and Sensing 2021; 116422C (2021) https://doi.org/10.1117/12.2579018
Event: SPIE BiOS, 2021, Online Only

Abstract

We propose a microscale photoacoustic hardware architecture using silicon photonics. The system builds on a platform that monolithically integrates on-chip light excitation and ultrasound detection of photoacoustic signal. The device uses a waveguide terminating with a meta grating structure to engineer an excitation beam profile. The ultrasound receiver is based on a photonic ring resonator that sits on top of mechanical membrane. The pressure wave impinging on the membrane deflects the ring resonator resulting in change in optical readout. We believe the method is scalable to develop low-cost ultra-highly sensitive photoacoustic sensors for applications such as PA imaging, spectroscopy, and microscopy.

Conference Presentation

Citation Download Citation

Robin Singh, Anu Agarwal, and Brian W. Anthony "Microscale photoacoustic spectroscopy using integrated photonics for lab-on-chip applications", Proc. SPIE 11642, Photons Plus Ultrasound: Imaging and Sensing 2021, 116422C (5 March 2021); https://doi.org/10.1117/12.2579018

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