標題: Anisotropy of light extraction from GaN two-dimensional photonic crystals
作者: Lai, Chun-Feng
Chi, Jim-Yong
Kuo, Hao-Chung
Chao, Chia-Hsin
Hsueh, Han-Tsung
Trevor, Jih-Fu
Yeh, Wen-Yung
光電工程學系
Department of Photonics
公開日期: 12-May-2008
摘要: 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. (C) 2008 Optical Society of America.
URI: http://dx.doi.org/10.1364/OE.16.007285
http://hdl.handle.net/11536/9337
ISSN: 1094-4087
DOI: 10.1364/OE.16.007285
期刊: OPTICS EXPRESS
Volume: 16
Issue: 10
起始頁: 7285
結束頁: 7294
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