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arXiv · 2101.11940

All-optical beam steering using the polariton lighthouse effect

Samuel M. H. Luk·Hadrien Vergnet·Ombline Lafont·Przemyslaw Lewandowski·Nai H. Kwong·Elisabeth Galopin·Aristide Lemaitre·Philippe Roussignol·Jérôme Tignon·Stefan Schumacher·Rolf Binder·Emmanuel Baudin
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Abstract

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.

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Samuel M. H. Luk, Hadrien Vergnet, Ombline Lafont, Przemyslaw Lewandowski, Nai H. Kwong, Elisabeth Galopin, Aristide Lemaitre, Philippe Roussignol, Jérôme Tignon, Stefan Schumacher, Rolf Binder, Emmanuel Baudin. 2021-01-28. All-optical beam steering using the polariton lighthouse effect. https://doi.org/10.1021/acsphotonics.0c01962

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