Published in Conference on Lasers and Electro-Optics, May 16, 2010, pages 1-2.
Copyright © 2010 Optical Society of America. This paper was published in Conference on Lasers and Electro-Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5499676#Abstract. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
A 3-fold symmetric photonic-crystal grating is simulated using improved FDTD-model. Transmission gratings are optimized. Then, the best cases are simulated in GaN-LED models. The maximum extraction efficiency improvement is 40× greater compared to conventional LEDs.
Electrical and Computer Engineering