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Distance-dependence of the coupling between split-ring resonators and single-quantum-well gain

Meinzer, N.; König, M.; Ruther, M.; Linden, S.; Khitrova, G.; Gibbs, H.M.; Busch, K.; Wegener, M.

Abstract:
We present low-temperature femtosecond pump-probe experiments on arrays of silver split-ring resonators coupled to single quantum wells, in which we vary the geometrical separation between the two components to study the variation of coupling with distance. Its strength is found to decrease exponentially with increasing separation with a 1/e length on the order of 8 nm. We further link our experimental results to numerical calculations of the near fields which show the same distance-dependence as the coupling strength in the experiment. Together, this confirms the assumption of a near-field-assisted coupling mechanism.



Originalveröffentlichung
DOI: 10.1063/1.3633353
Scopus
Zitationen: 23
Web of Science
Zitationen: 21
Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Theoretische Festkörperphysik (TFP)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2011
Sprache Englisch
Identifikator ISSN: 0003-6951
KITopen-ID: 1000027141
HGF-Programm 43.14.01 (POF II, LK 01)
Erschienen in Applied Physics Letters
Band 99
Heft 11
Seiten 111104/1 - 3
Nachgewiesen in Scopus
Web of Science
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