Enhanced nanoparticle detection with quasi-droplet modes

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

We demonstrate nanoparticle sensing with quasi-droplet modes in an ultrathin-walled hollow whispering gallery resonator (WGR). The quasi-droplet whispering gallery modes (WGMs) allow the detection sensitivity to go beyond that achieved by the weak interactions of the evanescent field in solid WGRs. Experimental results with our hollow WGRs show 400 MHz mode shifts for WGM interaction with 100 nm particles and a corresponding linewidth broadening of 75 MHz, exceeding the detection sensitivity previously reported.

Original languageEnglish
Title of host publicationConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2018
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580453
DOIs
Publication statusPublished - 2018
Externally publishedYes
EventConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2018 - Hong Kong, China
Duration: 29 Jul 20183 Aug 2018

Publication series

NameOptics InfoBase Conference Papers
VolumePart F113-CLEOPR 2018
ISSN (Electronic)2162-2701

Conference

ConferenceConference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2018
Country/TerritoryChina
CityHong Kong
Period29/07/183/08/18

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