Share Email Print

Proceedings Paper

Micro-cylinder mode in photonic quasicrystal observed by near-field optical microscopy
Author(s): Zheyu Fang; Tao Dai; Bei Zhang; Xing Zhu
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

We propose and realize a micro-cylinder mode in photonic quasicrystal (PQC) on the top of an edge-emitting GaN light emitting diodes (LEDs) with 30 μm indium tin oxides (ITO) covered and 8 μm GaN exposed broad-stripe. A well-defined hexagon-like localized state following a C6v symmetry is identified from the PQC micro-cylinder arrays. Enhancement factor of the surface light extraction from 12-fold PQC patterns on electrical current injected GaN-based light emitters is 2.4 times higher than non-patterned regions, which is observed by scanning near-field optical microscopy (SNOM). According to the near-field optical images, micro-cylinders can be considered as nano-optics sources because the electromagnetic energy is strongly concentrated due to the wave guide modes and the beaming effect of the surface microstructures.

Paper Details

Date Published: 4 January 2008
PDF: 5 pages
Proc. SPIE 6831, Nanophotonics, Nanostructure, and Nanometrology II, 683102 (4 January 2008); doi: 10.1117/12.767590
Show Author Affiliations
Zheyu Fang, Peking Univ. (China)
Tao Dai, Peking Univ. (China)
Bei Zhang, Peking Univ. (China)
Xing Zhu, Peking Univ. (China)

Published in SPIE Proceedings Vol. 6831:
Nanophotonics, Nanostructure, and Nanometrology II
Xing Zhu; Stephen Y. Chou; Yasuhiko Arakawa, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?