Broadband enhancement and inhibition of single quantum dot emission in plasmonic nano-cavities operating at telecommunications wavelengths

A plasmonic microcavity providing broadband control of spontaneous emission for large and sparse semiconductor quantum dots emitting at telecommunications wavelengths is proposed. By designing and fabricating such a cavity, we demonstrate a broadband Purcell effect with spontaneous emission enhancem...

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Bibliographic Details
Published in:Applied physics letters 2013-08, Vol.103 (6)
Main Authors: Elvira, David, Braive, Rémy, Beaudoin, Grégoire, Sagnes, Isabelle, Hugonin, Jean-Paul, Abram, Izo, Robert-Philip, Isabelle, Lalanne, Philippe, Beveratos, Alexios
Format: Article
Language:English
Subjects:
Engineering Sciences
Optics
Photonic
Physics
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Summary:A plasmonic microcavity providing broadband control of spontaneous emission for large and sparse semiconductor quantum dots emitting at telecommunications wavelengths is proposed. By designing and fabricating such a cavity, we demonstrate a broadband Purcell effect with spontaneous emission enhancement over a broad spectral range of Δλ≃20 nm with a 3.9-fold maximum enhancement, as well as inhibition over Δλ≃100 nm around 1.3 μm. The broadband feature relaxes the constraint on spectral matching between the dot emission and the cavity mode, favourable for implementing efficient non-classical light sources or nanoscale lasers.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4818131