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Title

Enhancement of spontaneous emission in three-dimensional low refractive-index photonic crystals with designed defects

Author(s)

Gan, Zongsong;  Jia, Baohua;  Liu, Jing-Feng;  Wang, Xue-Hua;  Gu, Min

Abstract

In this work, we demonstrate that low refractive-index three-dimensional photonics crystals with a planar defect, fabricated with the direct laser writing method, can be used to effectively enhance the spontaneous emission (SE) of semiconductor quantum dots (QDs). To achieve this, we develop a controllable and reliable method to integrate quantum dots into the defect-embedded photonic crystals (PCs). Although the overlapping of different direction stop gaps in low refractive-index defect-free three-dimensional photonic crystals imposes a challenge to realize spontaneous emission enhancement at the band edge wavelength, we achieve a 15% enhancement of the spontaneous emission by introducing a tailored planar defect.

Publication type

Journal article

Research centre

Swinburne University of Technology. Faculty of Engineering and Industrial Sciences. Centre for Micro-Photonics

Source

Applied Physics Letters, Vol. 101, no. 7 (Aug 2012), article no. 071109

Publication year

2012

FOR Code(s)

02 Physical Sciences;  09 Engineering

Keyword(s)

Crystal defects;  Photonic crystals;  Refractive index;  Semiconductor quantum dots;  Spontaneous emission;  Superradiance

Publisher

American Institute of Physics

ISSN

0003-6951

Publisher URL

http://dx.doi.org/10.1063/1.4745923

Copyright

Copyright © 2012 American Institute of Physics. The published version is reproduced with the kind permission of the publisher.

Research Projects

Australian Research Council Centre of Excellence for Ultrahigh Bandwidth Devices for Optical Systems, Australian Research Council grant number CE110001018
Refractive index manipulation in photonic bandgap materials for highly efficient far-field three- dimensional nonlinear nanofocusing, Australian Research Council grant number DE120100291

Full text

Peer reviewed