Open RQC colloquium. Lecture 46

Abstract

In turbid tissue-like scattering medium the conventional polarized light, scattered multiple number of times, is depolarized, and the depolarization rate depends strongly on the size and shape of scattering particles, as well as on the number of scattering events. In fact, the structure of light can be more complicated when the polarization of light across the laser beam can be radially or azimuthally polarized and carry orbital angular momentum. When these structured light beams, such as cylindrical vector beam (cvb) and/or laguerre-gaussian (lg) beams, propagates through a turbid tissue-like scattering medium, either anisotropic or inhomogeneous, the spin or angular momentum are changed that leads to spin-orbit interaction. The spin-orbit interaction leads to the mutual influence of the polarization and the trajectory of the light propagation. In current presentation it is shown that by applying cvb and lg beams the sensitivity, in comparison to the conventional tissue polarimetry approach, is increased at least twice. All the results suggest that there is a high potential in application of structured light beams in tissue diagnosis. Finally, the perspectives of using quantum entanglements for diagnostic purpose are discussing.

Biography

Igor Meglinski is a full professor leading the Biophotonics research at the University of Oulu, Finland. He obtained PhD degree in Biophysics and Biomedical Optics at the interface between University of Pennsylvania/USA and Saratov State University/Russia in 1997, under the supervision of Professor Britton Chance (known as “father of modern biophysics and biomedical optics”). His research interests lie at the interface between physics, biomedical engineering, medicine and biological sciences, focusing on the development of new sensors and non-invasive optical diagnostic/imaging techniques and their applications in medicine & biology, material sciences, combustion, pharmacy, environmental monitoring, agricultural, food processing and the health care industries. Prof. Meglinski is author and/or co-author of over 300 papers in peer-reviewed scientific journal, conference proceedings and book chapter and delivered over 600 presentations at a range of conferences, symposia and workshops, including about 270 invited and plenary lectures and keynote talks. He is Chartered Physicist (CPhys) and Engineer (CEng), Fellow of the Institute of Physics (FInstP), Senior Member of IEEE and Fellow of SPIE.

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