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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 10 — May. 12, 2008
  • pp: 7285–7294

Anisotropy of light extraction from GaN two-dimensional photonic crystals

Chun-Feng Lai, Jim-Yong Chi, Hao-Chung Kuo, Chia-Hsin Chao, Han-Tsung Hsueh, Jih-Fu Trevor Wang, and Wen-Yung Yeh  »View Author Affiliations

Optics Express, Vol. 16, Issue 10, pp. 7285-7294 (2008)

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Angular distribution of light diffracted out of the plane of two-dimensional photonic crystals (PhC) has been studied in the azimuthal direction with a specially designed waveguide structure. The optical images of the light extraction patterns from the guided photoluminescence light are obtained with laser excitation in the center of the annual structure made on GaN multilayer. For increasing lattice constant, symmetric patterns with varying number of petals according to the symmetry of the PhC are observed. The appearance and disappearance of the petals can be explained using the Ewald construction in the reciprocal space. The dependence of light extraction on the lattice constant and orientation, and incident angle are investigated.

© 2008 Optical Society of America

OCIS Codes
(230.5298) Optical devices : Photonic crystals

ToC Category:
Photonic Crystals

Original Manuscript: January 11, 2008
Revised Manuscript: April 28, 2008
Manuscript Accepted: April 28, 2008
Published: May 6, 2008

Chun-Feng Lai, Jim-Yong Chi, Hao-Chung Kuo, Chia-Hsin Chao, Han-Tsung Hsueh, Jih-Fu Trevor Wang, and Wen-Yung Yeh, "Anisotropy of light extraction from GaN two-dimensional photonic crystals," Opt. Express 16, 7285-7294 (2008)

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