Photoacoustic remote sensing microscopy with lock-in amplification

Wei Shi; Parsin Hajireza; Kevan Bell; Roger Zemp

doi:10.1117/12.2253195

3 March 2017 Photoacoustic remote sensing microscopy with lock-in amplification

Wei Shi, Parsin Hajireza, Kevan Bell, Roger Zemp

Proceedings Volume 10064, Photons Plus Ultrasound: Imaging and Sensing 2017; 1006447 (2017) https://doi.org/10.1117/12.2253195
Event: SPIE BiOS, 2017, San Francisco, California, United States

Abstract

High sensitive detection with lock-in amplification can provide high signal noise ratio even when noise is in orders of magnitude higher than the signal. Here we report to combine lock-in amplification with a novel photoacoustic remote sensing (PARS) technology to achieve high resolution, high contrast, all optical non-contact photoacoustic imaging at depth beyond optical scattering limitation. We demonstrate phantom measurements from PARS with lock-in technology were several orders of magnitude more sensitive than those from PARS with the broadband detection techniques.

Citation Download Citation

Wei Shi, Parsin Hajireza, Kevan Bell, and Roger Zemp "Photoacoustic remote sensing microscopy with lock-in amplification", Proc. SPIE 10064, Photons Plus Ultrasound: Imaging and Sensing 2017, 1006447 (3 March 2017); https://doi.org/10.1117/12.2253195

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