Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F13%3A10173453" target="_blank" >RIV/00216208:11320/13:10173453 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1364/JOSAB.30.003079" target="_blank" >http://dx.doi.org/10.1364/JOSAB.30.003079</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/JOSAB.30.003079" target="_blank" >10.1364/JOSAB.30.003079</a>

Result language

angličtina

Original language name

Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots

Original language description

Whispering gallery modes (WGMs) in microspheres containing embedded fluorophores (e.g., organic dyes or quantum dots) may find refractometric sensing or microlasing applications. However, there have been relatively few investigations on the relationshipbetween the intrinsic microsphere resonances and the WGMs observed in fluorescence spectra for emitters coupled to the microsphere. Here we find that an apparently simple fluorescence WGM spectrum can mask a much more complicated underlying microcavity mode structure and that the observed fluorescence spectra are controlled by the emitter linewidth. By examining the cavity structure, we also verify that an effective ensemble emitter linewidth can be extracted from the fluorescence data. Finally, spectral diffusion is suggested as a possible origin of the periodic fluorescence WGM spectra observed in many microsphere cavities, without which these resonances might be unobservable. (C) 2013 Optical Society of America

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

—

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2013

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of the Optical Society of America B: Optical Physics

ISSN

0740-3224

e-ISSN

—

Volume of the periodical

30

Issue of the periodical within the volume

11

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

3079-3085

UT code for WoS article

000326580500042

EID of the result in the Scopus database

—