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

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About: Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1364/JOSAB.30.003079
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 relationship between 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 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 relationship between 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 (en)
Title	Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots (en)
skos:prefLabel	Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots Structure of whispering gallery mode spectrum of microspheres coated with fluorescent silicon quantum dots (en)
skos:notation	RIV/00216208:11320/13:10173453!RIV14-MSM-11320___
http://linked.open...avai/riv/aktivita	I
http://linked.open...avai/riv/aktivity	I
http://linked.open...iv/cisloPeriodika	11
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Valenta, Jan
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	108420
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/13:10173453
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	layer; sensors; sensitivity; microcavities; cavity; nanocrystals; diffusion; room-temperature; spontaneous emission; photoluminescence spectroscopy (en)
http://linked.open.../riv/klicoveSlovo	layer microcavities photoluminescence spectroscopy cavity nanocrystals sensors diffusion sensitivity room-temperature spontaneous emission
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[CCCD432A57C0]
http://linked.open...i/riv/nazevZdroje	Journal of the Optical Society of America B: Optical Physics
http://linked.open...in/vavai/riv/obor	BH
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	30
http://linked.open...iv/tvurceVysledku	Valenta, Jan Meldrum, A. Zhi, Y.
http://linked.open...ain/vavai/riv/wos	000326580500042
issn	0740-3224
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1364/JOSAB.30.003079
http://localhost/t...ganizacniJednotka	11320

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