Seminar
Lecture I: Spin-photonics with off-axis tilted systems
Speaker: Prof. Subhasish Dutta Gupta (University of Hyderabad, Hyderabad)
Abstract: We briefly review some of the manifestations of spin-orbit and orbit-orbit interactions in optical systems in general. We focus on optical systems with off-axis beams incident with small tilt angles. We present explicit results for diffraction of an off axis vector beam incident on a tilted circular aperture [1]. We extend the results to a tilted tweezer system resulting in enhanced transverse spin and Belinfante momentum [2].
About the speaker: Prof. Subhasish Dutta Gupta is Honorary Professor at University of Hyderabad and Adjunct Professor, Tata Institute for Fundamental Research Research Adjunct Professor, IISER, Kolkata. His main research interests are in theoretical optics, plasmonics, nano-optics, quantum and nonlinear optics.
References
1. Ghanasyam Remesh, et al., Diffraction of an off-axis vector-beam by a tilted aperture, J. Opt. 24 (2022) 105602 (12pp) doi: https://doi.org/10.1088/2040-8986/ac8aac
2. Sauvik Roy, et al., Manipulating the transverse spin angular momentum and Belinfante momentum of spin-polarized light by a tilted stratified medium in optical tweezers, Phys. Rev. A 105, 063514 (2022) . DOI: 10.1103/PhysRevA.105.063514