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Optics Letters

Observation of reflection-induced light correlation in spontaneous emission in front of a mirror

Hiroshi Taniguchi, Hiroto Ito

Published Oct 1, 1994• 2 citations
Publisher

Abstract

We show that fluorescence spectra from a dye-doped polymer film in front of a mirror exhibit angular and spectral localization effects caused by self-interference in the spontaneous emission. Experimental spectral results depending on film thickness are found to be by a semiclassical description. in good agreement with the calculated results predicted by a semiclassical description.

DOI
10.1364/ol.19.001565

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We show that fluorescence spectra from a dye-doped polymer film in front of a mirror exhibit angular and spectral localization effects caused by self-interference in the spontaneous emission. Experimental spectral results depending on film thickness are found to be by a semiclassical description. in good agreement with the calculated results predicted by a semiclassical description.
Fluorescence lifetimes of thin, rhodamine 6G-doped polymer layers in front of a mirror have been determined as a function of the emitter-mirror separation and the conditions of excitation and observation. Lifetime is well known to depend on the spatial emitter-mirror separation. The explanation of experimental data needs to consider direction, polarization, and numerical aperture of the experimental system. As predicted theoretically, experimental results depend on the conditions of illumination and observation, because of the different lifetimes of emitters aligned horizontally or vertically with respect to the plane of interfaces and their selection by the experimental system. This effect is not observable when ions are used as a source of fluorescence, because ensemble averaging depends on the properties of sources.