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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

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate theoretically and experimentally that a specifically designed microcavity driven in the optical parametric oscillation regime exhibits lighthouse-like emission, that is, an emission focused around a single direction. Remarkably, the emission direction of this microlighthouse is continuously controlled by the linear polarization of the incident laser, and angular beam steering over 360° is demonstrated. Theoretically, this 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.

Original languageEnglish (US)
Pages (from-to)449-454
Number of pages6
JournalACS Photonics
Volume8
Issue number2
DOIs
StatePublished - Feb 17 2021

Keywords

  • all-optical signal processing
  • nonlinear optics
  • polaritons
  • semiconductor microcavity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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