Martin Frimmer, A. Femius Koenderink
We experimentally demonstrate control of the rate of spontaneous emission in a tunable hybrid photonic system that consists of two canonical building blocks for spontaneous emission control, an optical antenna and a mirror, each providing a modification of the local density of optical states (LDOS).We couple fluorophores to a plasmonic antenna to create a superemitter with an enhanced decay rate. In a superemitter analog of the seminal Drexhage experiment we probe the LDOS of a nanomechanically approached mirror. Due to the electrodynamic interaction of the antenna with its own mirror image the superemitter traces the inverse LDOS of the mirror, in stark contrast to a bare source, whose decay rate is proportional to the mirror LDOS.
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http://arxiv.org/abs/1212.6396
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