Mainz 2026 – scientific programme
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A: Fachverband Atomphysik
A 21: Poster – Atomic Systems in External Fields
A 21.2: Poster
Wednesday, March 4, 2026, 17:00–19:00, Philo 1. OG
Interaction between Poincaré light and atoms — •Shreyas Ramakrishna1,2 and Stephan Fritzsche1,2 — 1Helmholtz Institute Jena, Germany — 2Friedrich-Schiller University Jena, Germany
This poster discusses the physics underlying the interaction between a Poincaré beam and an optically polarized atomic medium in the presence of a constant magnetic field. Our investigation reveals that the absorption profile of the Poincaré beam exhibits axial asymmetry. This asymmetry depends sensitively on the relative orientation of the pump and probe light fields with respect to the quantization axis, as well as on the strength of the magnetic field. To illustrate these findings, we choose the incoming radiation drives an electric dipole transition, Fg = 1 to Fe = 0 in rubidium atoms subjected to various magnetic field strengths.
Keywords: Structured light; Vector vortex light; Vector light atom interaction