Optical spin-orbit interactions in molecular scattering of twisted light

Kayn A. Forbes; David L. Andrews

doi:10.1117/12.2509390

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1 March 2019 Optical spin-orbit interactions in molecular scattering of twisted light

Kayn A. Forbes, David L. Andrews

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Proceedings Volume 10935, Complex Light and Optical Forces XIII; 109350U (2019) https://doi.org/10.1117/12.2509390
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

The unique role that electric quadrupole transition moments can play in chiroptical interactions has recently been established with twisted light beams. Manifesting a spin-orbit interaction in paraxial light, the engagement of electric quadrupoles in electronic transitions is highlighted in optical phenomena such as absorption, in both chiral and achiral media. However, spin-orbit interactions of light are also well-known in scattering from small particles, and recent exploratory experimental work suggests a chiroptical interaction of this nature in the scattering of optical vortex beams. Using a quantum electrodynamical formulation, such a sensitivity to the handedness of a vortex beam is accounted for in molecular scattering processes.

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Kayn A. Forbes and David L. Andrews "Optical spin-orbit interactions in molecular scattering of twisted light", Proc. SPIE 10935, Complex Light and Optical Forces XIII, 109350U (1 March 2019); https://doi.org/10.1117/12.2509390

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