Over 30-fold enhancement of light extraction from free-standing photonic crystal slabs with InGaAs quantum dots at low temperature

被引：67

作者：

Ryu, HY ^{[1
]}

Lee, YH

Sellin, RL

Bimberg, D

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

[2] Tech Univ Berlin, Inst Festkorperphys, D-10623 Berlin, Germany

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 22期

关键词：

D O I：

10.1063/1.1420405

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Highly efficient extraction of photoluminescence is observed from two-dimensional photonic crystal slabs employing InGaAs quantum dots as active material. The introduction of quantum dots reduces diffusion of carriers and thereby suppresses the surface recombination at the air-hole sidewalls of the photonic crystal. Around the normalized frequency of 0.7, over thirty-fold enhancement of the photoluminescence extraction is achieved at 78 K, indicating strong coupling to leaky modes of the free-standing photonic crystal slab. In addition, when the photoluminescence spectra overlaps with a photonic band gap, enhanced light extraction originating from the photonic band gap is observed experimentally. (C) 2001 American Institute of Physics.

引用

页码：3573 / 3575

页数：3

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