Plasmon-enhanced fluorescence near nonlocal metallic nanospheres

Christos Tserkezis, N. Stefanou, Martijn Wubs, N. Asger Mortensen

Research output: Contribution to conferencePosterResearch

Abstract

Spontaneous emission and fluorescence of organic molecules are known to strongly depend on the local electromagnetic environment. Plasmonic nanoparticles are widely explored as templates for controlling light-matter interactions, and can be tailored to optimize the fluorescence rate (Ȗem) of a dipole emitter. Here we explore the importance of hitherto disregarded nonclassical effects in the description of emitter-plasmon
hybrids, focusing on the roles of metal nonlocal optical response and size-dependent plasmon damping [1]. Comparison between the common local response approximation (LRA) and the generalized nonlocal optical response (GNOR) theory [2] shows that a significant decrease in fluorescence enhancement is obtained for emitters close to small metallic nanospheres or thin metallic nanoshells, while the optimum emitter position is also affected. In this respect, our recent work introduces the study of emitterplasmon coupling (in the weak-coupling limit) as a sensitive test for the validity of stateof-the-art nonclassical models. For the regime of strong emitter-plasmon coupling, we anticipate an analogously wide importance of a description beyond classical
electrodynamics, particularly once electron spill-out and tunneling are also fully considered.
Original languageEnglish
Publication date2016
Publication statusPublished - 2016
EventStrong Coupling with Organic Molecules - Palacio Miramar, Donostia-San Sebastián, Spain
Duration: 19 Oct 201621 Oct 2016

Conference

ConferenceStrong Coupling with Organic Molecules
LocationPalacio Miramar
Country/TerritorySpain
CityDonostia-San Sebastián
Period19/10/201621/10/2016

Bibliographical note

Poster presented at SCOM16: Strong Coupling with Organic Molecules<br/>http://scom16.dipc.org/

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