Optimized emission in nanorod arrays through quasi-aperiodic inverse design

被引：5
|
作者：
Anderson, P. Duke [1 ]
Povinelli, Michelle L. [1 ]
机构：
[1] Univ So Calif, Ming Hsieh Dept Elect Engn, Los Angeles, CA 90089 USA
来源：
OPTICS LETTERS | 2015年 / 40卷 / 11期
关键词：
HIGH EXTRACTION EFFICIENCY; PHOTONIC-CRYSTAL; LIGHT EXTRACTION; ENHANCEMENT; RADIATION; SYMMETRY; LASERS; MODES; LEDS;
D O I：
10.1364/OL.40.002672
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate a new class of quasi-aperiodic nanorod structures for the enhancement of incoherent light emission. We identify one optimized structure using an inverse design algorithm and the finite-difference time-domain method. We carry out emission calculations on both the optimized structure as well as a simple periodic array. The optimized structure achieves nearly perfect light extraction while maintaining a high spontaneous emission rate. Overall, the optimized structure can achieve a 20%-42% increase in external quantum efficiency relative to a simple periodic design, depending on material quality. (C) 2015 Optical Society of America
引用
收藏
页码：2672 / 2675
页数：4
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