| Authors: | E. Dieussaert, R. Baets, Y. Li | | Title: | Proposal for non-contact photoacoustics using silicon photonics-based Laser Doppler Vibrometers | | Format: | International Conference Proceedings | | Publication date: | 11/2022 | | Journal/Conference/Book: | IEEE Benelux Photonics Chapter - Annual Symposium 2022
| | Volume(Issue): | p.poster 41 | | Location: | Eindhoven, Netherlands | | Citations: | Look up on Google Scholar
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Abstract
Photoacoustics has proven to be an important technique for realizing new sensing and imaging solutions. Conventional methods rely on an ultrasound detector in contact with the sample. Contact-based methods increase however the risk of contamination or reaction with the sample. This is a major drawback for many applications, especially in the biomedical field. Interferometric techniques have proven to enable non-contact photoacoustics, but these free-space or fiber-based systems are usually too bulky. In this paper, we present silicon photonics-enabled on-chip Laser Doppler Vibrometers (LDV) as a compact and non-contact solution for photoacoustic sensing or imaging. A design of silicon photonics-based LDVs is proposed and its performance is analyzed and compared to other ultrasound detector solutions for non-contact photoacoustics. From these performance metrics, we discuss the benefits and limitations of LDVs for the detection of photoacoustic signals and propose how an on-chip LDV array can provide compact and non-contact photoacoustic imaging. Related Research Topics
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