, Volume 5, Issue 3, pp 608-612,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 27 Dec 2009

Cavity Enhancement of Single Quantum Dot Emission in the Blue

Abstract

Cavity-enhanced single-photon emission in the blue spectral region was measured from single InGaN/GaN quantum dots. The low-Q microcavities used were characterized using micro-reflectance spectroscopy where the source was the enhanced blue output from a photonic crystal fibre. Micro-photoluminescence was observed from several cavities and found to be ~10 times stronger than typical InGaN quantum dot emission without a cavity. The measurements were performed using non-linear excitation spectroscopy in order to suppress the background emission from the underlying wetting layer.