Plasmonic whispering-gallery modes in a semiconductor-insulator-metal hybrid structure

Chien Ju Lee, Han Yeh, Yen Chun Chen, Chun Yuan Wang, Shangir Gwo, Jer Shing Huang, Wen-Hao Chang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We demonstrate a plasmonic cavity based on a hybrid semiconductor-insulator-metal structure, which can support plasmonic whispering-gallery modes (WGMs) in the insulator layer. The hybrid structure consists of a semiconductor microdisk with embedded gain medium on top of a single-crystalline gold flake with a nanometer-thick dielectric gap in between. By optimizing the dielectric gap thickness, it is possible to form coupled modes consisting of both photonic WGM in the microdisk and plasmonic WGM in the dielectric gap, by which a high field-gain overlap and an efficient cavity feedback can be achieved for investigating strong light-matter interactions and laser applications.

Original languageEnglish
Title of host publication2015 Conference on Lasers and Electro-Optics, CLEO 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ChapterFTu2E.8
Number of pages2
ISBN (Electronic)9781557529688
DOIs
StatePublished - May 2015
EventConference on Lasers and Electro-Optics, CLEO 2015 - San Jose, United States
Duration: 10 May 201515 May 2015

Publication series

NameConference on Lasers and Electro-Optics Europe - Technical Digest
Volume2015-August

Conference

ConferenceConference on Lasers and Electro-Optics, CLEO 2015
CountryUnited States
CitySan Jose
Period10/05/1515/05/15

Keywords

  • Cavity resonators
  • Dielectrics
  • Gold
  • Optical device fabrication
  • Optical feedback
  • Photonics
  • Plasmons

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