Advanced Photonics, 2020, 2 (3): 036003, Published Online: May. 22, 2020   

Transmission of vector vortex beams in dispersive media Download: 730次

Author Affiliations
1 Sapienza Università di Roma, Dipartimento di Fisica, Rome, Italy
2 Università degli Studi Roma Tre, Dipartimento di Scienze, Rome, Italy
3 Consiglio Nazionale delle Ricerche, Istituto dei Sistemi Complessi, Roma, Italy
4 Technische Universität München, Biological Imaging and Center for Translational Cancer Research, Munich, Germany
5 Institute of Biological and Medical Imaging, Helmholtz Zentrum München, Neuherberg, Germany
6 Medical University of Vienna, Department of Biomedical Imaging and Image-Guided Therapy, Molecular and Gender Imaging Service, Vienna, Austria
7 Ben-Gurion University of the Negev, Department of Electrical and Computer Engineering, Beer Sheva, Israel
Abstract
Scattering phenomena affect light propagation through any kind of medium from free space to biological tissues. Finding appropriate strategies to increase the robustness to scattering is the common requirement in developing both communication protocols and imaging systems. Recently, structured light has attracted attention due to its seeming scattering resistance in terms of transmissivity and spatial behavior. Moreover, correlation between optical polarization and orbital angular momentum (OAM), which characterizes the so-called vector vortex beams (VVBs) states, seems to allow for the preservation of the polarization pattern. We extend the analysis by investigating both the spatial features and the polarization structure of vectorial optical vortexes propagating in scattering media with different concentrations. Among the observed features, we find a sudden swift decrease in contrast ratio for Gaussian, OAM, and VVB modes for concentrations of the adopted scattering media exceeding 0.09%. Our analysis provides a more general and complete study on the propagation of structured light in dispersive and scattering media.

Ilaria Gianani, Alessia Suprano, Taira Giordani, Nicolò Spagnolo, Fabio Sciarrino, Dimitris Gorpas, Vasilis Ntziachristos, Katja Pinker, Netanel Biton, Judy Kupferman, Shlomi Arnon. Transmission of vector vortex beams in dispersive media[J]. Advanced Photonics, 2020, 2(3): 036003.

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