Spontaneous emission from fluorescent molecules embedded in photonic crystals consisting of polystyrene microspheres
- 20 April 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 72 (16) , 1957-1959
- https://doi.org/10.1063/1.121234
Abstract
Spontaneous emission from dye molecules embedded in periodic dielectric structures was investigated. The structures consist of close-packed arrays of dye-doped polystyrene microspheres. Periodic arrays of polystyrene spheres with a submicrometer diameter were shown to provide a nonoverlapping gap or pseudogap in the visible spectral region. The modification of the spontaneous emission from inside the pseudogap structure was observed as a deep dip in the photoluminescence spectra. The alteration in the emission spectra is explained in terms of the partial suppression of radiation modes due to the periodic dielectric structures.Keywords
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