| Authors: | E. Dieussaert, R. Baets, Y. Li | | Title: | Silicon photonics-based Laser Doppler Vibrometer for non-contact photoacoustic sensing | | Format: | International Conference Proceedings | | Publication date: | 3/2023 | | Journal/Conference/Book: | Proc. SPIE 12425, Smart Photonic and Optoelectronic Integrated Circuits 2023
| | Editor/Publisher: | SPIE, | | Volume(Issue): | 12425 p.124250C | | Location: | San Fransisco, United States | | DOI: | 10.1117/12.2648991 | | Citations: | Look up on Google Scholar
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Abstract
Sensitive optical vibrometers have been proven to be a key component for enabling non-contact photoa-
coustic sensing. However, most reported vibrometers use free-space optics, which are too bulky and costly
for many applications. In this paper, we demonstrate the detection of photoacoustic signals with a photonic
integrated circuit (PIC)-based Laser Doppler Vibrometer (LDV), realized on a silicon-on-insulator platform.
The photoacoustic signals are generated from a phantom with an embedded absorbing target. We report a
linear correlation between the detected photoacoustic signals and the absorber concentration, which proves
that PIC-based LDVs can be used for compact and non-contact photoacoustic sensing. Related Research Topics
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