Diffracted transmission effects of GaN and polymer two-dimensional square-lattice photonic crystals

被引：12

作者：

Xiong, Chang ^{[1
]}

Zhang, Bei

Kang, XiangNing

Dai, Tao

Zhang, GuoYi

机构：

[1] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

来源：

OPTICS EXPRESS | 2009年 / 17卷 / 26期

基金：

中国国家自然科学基金;

关键词：

LIGHT-EMITTING-DIODES; EXTRACTION-EFFICIENCY; BLUE; IMPROVEMENT; LEDS;

D O I：

10.1364/OE.17.023684

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The effects of the lattice pitch of GaN and polymer square-lattice photonic crystal (2PhC) on the diffracted transmission were studied by using rigorous coupled wave analysis (RCWA). Besides the first-order Bragg diffraction, higher-order diffractions from large pitches of PhC are also significant to the light extraction improvement. Three different diffraction mechanisms are illustrated through wave vector analysis. The enhancement factors of integrated transmission are obtained from a wide range of pitches with micro-scale for both GaN and polymer 2PhC. The experimental angular-resolved transmission on a transparent polymer sample of 2 mu m pitch 2PhC is comparable to the simulation. (C) 2009 Optical Society of America

引用

页码：23684 / 23689

页数：6

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