Abstract
Spontaneous emission can be controlled by reducing the number of allowed photon modes. One method suggested by Yablonovitch [1] and others [2], is to use three-dimensional periodic structures to create a Photonic Band Gap (PBG). Impurity states within the band gap can localise light and radically alter the emission characteristics of resonant luminescent centres. A second complementary approach followed by Yamamato [3] and Yokoyama [4] concentrates on microcavity structures, which quantize the photon modes by size effects.
© 1993 Optical Society of America
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