PhD. of Emiel Dieussaert

Author: Emiel Dieussaert Promotors: Yanlu Li and Roel Baets Dutch Title: Contactloze foto-akoestische beeldvorming met op siliciumfotonica gebaseerde laser-doppler-vibrometrie English Title: Non-Contact Photoacoustic Imaging Using Silicon Photonics-Based Laser Doppler Vibrometry Date: 5/12/2024 Main Language: English ISBN number: 978-94-6355-932-4 Thesis: (6.7MB) Presentation: (4.4MB)

Abstract

Photoacoustic imaging is an innovative technique used in biomedical applications such as mapping blood vessels and measuring blood oxygen levels. It combines light and sound to create images of tissues. Traditional systems rely on sensors that require skin contact, which presents several disadvantages, including risks of infection. This study focuses on developing a compact, contactless system using silicon photonics-based Laser Doppler Vibrometry (LDV), a technology capable of detecting sound signals without physical contact by utilizing light.

By integrating optical components on a single chip, this approach offers the potential to create systems that are smaller, simpler, and more cost-effective than current technologies. Through proof-of-concept experiments, this work demonstrates that a chip-based system can successfully measure ultrasonic vibrations and produce photoacoustic images without direct contact. This advancement could pave the way for contactless photoacoustic imaging, addressing the limitations of traditional contact-based methods.

Related Research Topics

• Miniaturized laser Doppler vibrometer on silicon-on-insulator (SOI)