Dynamic Control over the Optical Transmission of Nanoscale Dielectric Metasurface by Alkali Vapors

Jonathan Bar-David, Liron Stern, Uriel Levy*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

In recent years, dielectric and metallic nanoscale metasurfaces are attracting growing attention and are being used for variety of applications. Resulting from the ability to introduce abrupt changes in optical properties at nanoscale dimensions, metasurfaces enable unprecedented control over light's different degrees of freedom, in an essentially two-dimensional configuration. Yet, the dynamic control over metasurface properties still remains one of the ultimate goals of this field. Here, we demonstrate the optical resonant interaction between a form birefringent dielectric metasurface made of silicon and alkali atomic vapor to control and effectively tune the optical transmission pattern initially generated by the nanoscale dielectric metasurface. By doing so, we present a controllable metasurface system, the output of which may be altered by applying magnetic fields, changing input polarization, or shifting the optical frequency. Furthermore, we also demonstrate the nonlinear behavior of our system taking advantage of the saturation effect of atomic transition. The demonstrated approach paves the way for using metasurfaces in applications where dynamic tunability of the metasurface is in need, for example, for scanning systems, tunable focusing, real time displays, and more.

Original languageAmerican English
Pages (from-to)1127-1131
Number of pages5
JournalNano Letters
Volume17
Issue number2
DOIs
StatePublished - 8 Feb 2017

Bibliographical note

Publisher Copyright:
© 2017 American Chemical Society.

Keywords

  • dielectric metasurface
  • photon-atom interaction
  • polarization encoding
  • tunable metasurface

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