Acousto-optic modulated vortex beam with tunable topological charge
Abstract
Controlling the symmetry of optical and mechanical waves is pivotal to their full exploitation in technological applications and topology-linked fundamental physics experiments. Leveraging on the control of orbital angular momentum, we introduce here a device forming super-high-frequency-modulated optical vortex beams via acousto-optic interaction of light with acoustic vortices. Originated by shape-engineering of a single-contact bulk acoustic wave resonator, we generate vortices in a wide band of frequencies around 4 GHz and with frequency/geometrically tunable topological charge from 1 to 13 and beyond. With all electrical control and on-chip integration our device offers new solutions for angular-momentum-based light communication, three-dimensional particle manipulation, as well as novel interaction schemes for optomechanical devices.
Cite
@article{arxiv.2410.17877,
title = {Acousto-optic modulated vortex beam with tunable topological charge},
author = {Alessandro Pitanti and Nazim Ashurbekov and Ismael dePedro-Embid and Madeleine Msall and Paulo V. Santos},
journal= {arXiv preprint arXiv:2410.17877},
year = {2024}
}
Comments
6 pages, 4 figures