High purity twisted light from a metasurface solid state resonator

Hend Sroor, Yao Wei Huang, Bereneice Sephton, Darryl Naidoo, Adam Vallés, Vincent Ginis, Qiwen Zhan, Cheng Wei Qiu, Antonio Ambrosio, Federico Capasso, Andrew Forbes

Research output: Chapter in Book/Report/Conference proceedingConference paperResearch

Abstract

Twisted light carrying orbital angular momentum (OAM) has given rise to many developments ranging from optical manipulation to optical communications. Generating twisted light from solid-state lasers was initially achieved by amplitude and dynamic phase control, and more recently by manipulating the geometric phase of light. These lasers have been limited to generate superposition of OAM modes as well as scalar modes with OAM ℓ = 10. Here we incorporate a metasurface device into a visible solid-state laser to control the angular momentum of light by arbitrary spin-to-orbit coupling. We demonstrate the generation of pure Laguerre Gaussian modes with OAM up to ℓ = 100. Modal decomposition measurements of the output beams reveal the higher purity of the generated modes can reach up to 96% for ℓ = 1 and 88% for ℓ = 100. our approach offers a new route for high brightness OAM states at the source.

Original languageEnglish
Title of host publicationSolid State Lasers XXIX
Subtitle of host publicationTechnology and Devices
EditorsW. Andrew Clarkson, Ramesh K. Shori
PublisherSPIE Press
Volume11259
ISBN (Electronic)9781510632813
DOIs
Publication statusPublished - 1 Jan 2020
EventSolid State Lasers XXIX: Technology and Devices 2020 - San Francisco, United States
Duration: 4 Feb 20206 Feb 2020

Publication series

NameSOLID STATE LASERS XXIX: TECHNOLOGY AND DEVICES
ISSN (Print)0277-786X

Conference

ConferenceSolid State Lasers XXIX: Technology and Devices 2020
CountryUnited States
CitySan Francisco
Period4/02/206/02/20

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