Abstract
Photonic crystals grown using self‐assembly from Rhodamine‐B dye‐doped polystyrene colloids show a systematic angle‐dependent suppression of spontaneous emission in the wavelength range of the photonic stop band, an enhancement at the band edge, spectral narrowing near the band edge and a laser threshold when excited with the second harmonic of Nd: YAG laser under certain conditions. Various designs of photonic crystal‐based microcavities are presented and their performance in emission is compared.
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