See you in two years!
11-16 April 2026
Conference 13006 > Paper 13006-110
Paper 13006-110

Orbital angular momentum in structured vortex beams: bridging the gap in biomedical imaging and diagnosis

10 April 2024 • 14:40 - 15:00 CEST | Londres 1/Salon 8, Niveau/Level 0

Abstract

We explore the application of structured vortex laser beams, or shaped light with orbital angular momentum (OAM), in the diagnosis of cell and cell cultures and the quantitative characterization of biological tissues. To examine the conservation of spin and orbital angular momenta during propagation, we constructed a Mach-Zehnder-like interferometer, equipped with a spatial light modulator (SLM), to generate Laguerre-Gaussian (LG) beams with varying momenta. As the LG beam traverses tissue samples, its interference with a reference plane wave is captured by a camera. Our findings reveal that the OAM of the LG beam is maintained through both normal and cancerous tissue samples, exhibiting a distinct phase shift – or twist of light – which is significantly more sensitive (up to ~1000 times) to changes in the tissue's refractive indices compared to conventional methods. We conclude that leveraging OAM in biomedical diagnosis presents exciting prospects for both groundbreaking biological research and enhanced clinical applications.

Presenter

Aston Univ. (United Kingdom)
Igor Meglinski is a Professor in Quantum Biophotonics and Biomedical Engineering at the College of Engineering and Physical Sciences at Aston University (UK). With over 450 articles, 7 books, 21 book chapters, over 800 conference presentations and invited talks, his research interests lie at the interface between physics, optics, and biomedical engineering, focusing on the development of new non-invasive imaging diagnostic modalities and their application in biomedicine and health care industries. He is a Chartered Physicist (CPhys), Chartered Engineer (CEng), Senior Member of IEEE, Fellow of Institute of Physics, FRMS, Fellow SPIE, and Fellow OPTICA (formerly Optical Society of America).
Application tracks: EU-funded Research
Presenter/Author
Aston Univ. (United Kingdom)
Author
Univ. of Oulu (Finland)
Author
Univ. of Oulu (Finland)
Author
Univ. of Oulu (Finland)