Tunable Orbital Angular Momentum Microring Lasers Using Chiral Exceptional Points

  • W. E. Hayenga
  • , J. Ren
  • , M. Parto
  • , F. Wu
  • , M. P. Hokmabadi
  • , C. Wolff
  • , R. El-Ganainy
  • , N. A. Mortensen
  • , D. N. Christodoulides
  • , M. Khajavikhan

Publikation: Kapitel i bog/rapport/konference-proceedingKonferencebidrag i proceedingsForskningpeer review

Abstract

A microring laser generating tunable orbital angular momentum states via chiral exceptional points is demonstrated. An incorporated inner S-bend waveguide construct provides an avenue to enforce unidirectional lasing in a predetermined manner.

OriginalsprogEngelsk
TitelConference on Lasers and Electro-Optics
ForlagIEEE
Publikationsdato1. maj 2019
Artikelnummer8750063
ISBN (Trykt)978-1-7281-3718-6
ISBN (Elektronisk)978-1-943580-57-6
DOI
StatusUdgivet - 1. maj 2019
Begivenhed2019 Conference on Lasers and Electro-Optics, CLEO - San Jose, USA
Varighed: 5. maj 201910. maj 2019

Konference

Konference2019 Conference on Lasers and Electro-Optics, CLEO
Land/OmrådeUSA
BySan Jose
Periode05/05/201910/05/2019
NavnConference on Lasers and Electro-Optics
Vol/bind2019
ISSN2160-9020

Finansiering

In conclusion, in this work we demonstrated a new type of exceptional point in microring resonators, resulting from the incorporation of an enclosed tapered S-shaped waveguide. Fabricated on an active III-V semiconductor platform, this type of microring structure is able to directly generate vector vortex beams with a tunable topological charge. Our work features the first realization of exceptional points with robust chirality in microring structures, and may open up new possibilities for studying non-Hermiticity in angular momentum space, vortex beam generation, as well as for sensing. Acknowledgments. ARO (W911NF-16-1-0013, W911NF-17-1-0481), NSF (ECCS 1454531, DMR-1420620, ECCS 1757025, CBET 1805200), DARPA(D18AP00058, HR00111820042, HR00111820038), ONR (N0001416-1-2640, N00014-18-1-2347), AFOSR (FA9550-14-1-0037), U.S.-Israel Binational Science Foundation (BSF) (2016381).

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