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The angular momentum of a light beam in the paraxial limit can be split into spin and orbital components. Only recently, optical processes involving a conversion of angular momentum from one form to another and related phenomena were conceived and experimentally demonstrated. I will more specifically focus on the effects generated by optical devices named q-plates and their ensuing generalizations, which have proved to be extremely convenient tools for controlling the phase and polarization structure of light beams. Several applications of these devices have been demonstrated in classical photonics and in quantum optics during the last years. In this presentation, after introducing the main concepts of spin-orbit optical couplings and the underlying physics, I will review a selection of recent applications.
Lorenzo Marrucci
"Spin-orbit optical phenomena and their applications", Proc. SPIE PC12584, Smart Materials for Opto-Electronic Applications, PC1258401 (8 June 2023); https://doi.org/10.1117/12.2665444
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Lorenzo Marrucci, "Spin-orbit optical phenomena and their applications," Proc. SPIE PC12584, Smart Materials for Opto-Electronic Applications, PC1258401 (8 June 2023); https://doi.org/10.1117/12.2665444