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  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies
  • Technical Digest (CD) (Optica Publishing Group, 2005),
  • paper CMEE1

Enhanced mode extraction in AlOx/GaAs microcavity pillars and circular gratings

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Abstract

The ability to enhance emission into vertically-propagating optical modes while suppressing emission into undesired modes is essential for the development of near-unity efficiency light-emitting diodes, thresholdless lasers, and true single-photon light sources. Microcavities (MC), micropillars, and wavelength-scale periodic structures such as gratings and photonic crystals offer ways to control spontaneous emission rates and directions through optical mode confinement and coherent scattering. Specifically, micropillars can be etched into planar MCs formed from a pair of 1λ-spaced distributed Bragg reflectors (DBRs) to enhance the spontaneous-emission coupling factor β [1].

© 2005 Optical Society of America

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