Spin-orbit interaction effects due to joint spectral-spatial dispersion

Anagha Sreedharan; Nirmal K. Viswanathan

doi:10.1117/12.2648673

15 March 2023 Spin-orbit interaction effects due to joint spectral-spatial dispersion

Anagha Sreedharan, Nirmal K. Viswanathan

Author Affiliations +

Proceedings Volume 12436, Complex Light and Optical Forces XVII; 124360R (2023) https://doi.org/10.1117/12.2648673
Event: SPIE OPTO, 2023, San Francisco, California, United States

Conference Poster

Abstract

We investigate the joint spectral-spatial dispersion effects on the spin-orbit interaction of light. The effect arises due to propagation of weakly focused linearly-polarized light beam through an elliptically birefringent quartz crystal plate (XP). We demonstrate via simulation and experiment a continuous and full rotation of the two-lobe intensity pattern around a phase singular point in the parameter space as a function of the incident beam wavelength (λ) and the fast-axis orientation (ϕ) of the XP. The joint spectral-spatial dispersion effect on the spin-orbit interaction of light further enhances our understanding of light-matter interaction and the emergence of topological behavior from a single crystal plate.

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Anagha Sreedharan and Nirmal K. Viswanathan "Spin-orbit interaction effects due to joint spectral-spatial dispersion", Proc. SPIE 12436, Complex Light and Optical Forces XVII, 124360R (15 March 2023); https://doi.org/10.1117/12.2648673

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