Versatile total angular momentum generation using cascaded J-plates

Yao-Wei Huang, Noah A. Rubin, Antonio Ambrosio, Zhujun Shi, Robert C. Devlin, Cheng-Wei Qiu, Federico Capasso*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Optical elements coupling the spin and orbital angular momentum (SAM/OAM) of light have found a range of applications in classical and quantum optics. The J-plate, with J referring to the photon's total angular momentum (TAM), is a metasurface device that imparts two arbitrary OAM states on an arbitrary orthogonal basis of spin states. We demonstrate that when these J-plates are cascaded in series, they can generate several single quantum number beams and versatile superpositions thereof. Moreover, in contrast to previous spin-orbit-converters, the output polarization states of cascaded J-plates are not constrained to be the conjugate of the input states. Cascaded J-plates are also demonstrated to produce vector vortex beams and complex structured light, providing new ways to control TAM states of light. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Original languageEnglish
Pages (from-to)7469-7484
Number of pages16
JournalOptics Express
Volume27
Issue number5
DOIs
StatePublished - 4 Mar 2019

Keywords

  • DIELECTRIC METASURFACES
  • LASER-BEAMS
  • SPIN
  • POLARIZATION
  • PHASE
  • CONVERSION
  • RESOLUTION
  • MODES
  • LIGHT

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