All-optical beam steering using the polariton lighthouse effect

We demonstrate theoretically and experimentally that a specifically designed microcavity driven in the optical parametric oscillation regime exhibits lighthouse-like emission, i.e., an emission focused around a single direction. Remarkably, the emission direction of this micro-lighthouse is continuo...

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Bibliographic Details
Published in:arXiv.org 2021-01
Main Authors: Luk, Samuel M H, Vergnet, Hadrien, Lafont, Ombline, Lewandowski, Przemyslaw, Kwong, Nai H, Galopin, Elisabeth, Lemaitre, Aristide, Roussignol, Philippe, Tignon, Jérôme, Schumacher, Stefan, Binder, Rolf, Baudin, Emmanuel
Format: Article
Language:English
Subjects:
Beam steering
Excitons
Laser beams
Lighthouses
Linear polarization
Nonlinear response
Polaritons
Online Access:Get full text
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Summary:We demonstrate theoretically and experimentally that a specifically designed microcavity driven in the optical parametric oscillation regime exhibits lighthouse-like emission, i.e., an emission focused around a single direction. Remarkably, the emission direction of this micro-lighthouse is continuously controlled by the linear polarization of the incident laser, and angular beam steering over \unit{360}{\degree} is demonstrated. Theoretically, this unprecedented effect arises from the interplay between the nonlinear optical response of microcavity exciton-polaritons, the difference in the subcavities forming the microcavity, and the rotational invariance of the device.
ISSN:2331-8422
DOI:10.48550/arxiv.2101.11940