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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 2 — Feb. 1, 2003
  • pp: 373–378

Coupling of point-defect microcavities in two-dimensional photonic-crystal slabs

Thomas D. Happ, Martin Kamp, Alfred Forchel, Anatolii V. Bazhenov, Ilja I. Tartakovskii, Alexander Gorbunov, and Vladimir D. Kulakovskii  »View Author Affiliations

JOSA B, Vol. 20, Issue 2, pp. 373-378 (2003)

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We investigate the coupling of two single point-defect microcavities formed in a two-dimensional photonic-crystal slab. The mode structure is probed using photoluminescence spectroscopy of self-assembled InGaAs quantum dots embedded in GaAs/AlGaAs membrane-based, photonic-crystal microcavities. As a baseline, we start from single defect cavities: We observe defect states originating from both the ground and the first-excited slab waveguide mode, depending on the photonic-crystal lattice period. This is explained using three-dimensional, plane-wave-expansion calculations. In the case of coupling between two such single defects, a splitting of the mode energies into binding and antibinding states controlled by the coupling strength is observed. These photonic-defect–molecule states are identified by a comparison of their expected far-field distributions with polarization-dependent measurements.

© 2003 Optical Society of America

OCIS Codes
(230.3990) Optical devices : Micro-optical devices
(230.5750) Optical devices : Resonators
(250.5300) Optoelectronics : Photonic integrated circuits

Thomas D. Happ, Martin Kamp, Alfred Forchel, Anatolii V. Bazhenov, Ilja I. Tartakovskii, Alexander Gorbunov, and Vladimir D. Kulakovskii, "Coupling of point-defect microcavities in two-dimensional photonic-crystal slabs," J. Opt. Soc. Am. B 20, 373-378 (2003)

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