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Conference on Lasers and Electro-Optics

Room temperature variable slow light using semiconductor quantum dots

Piotr Konrad Kondratko, Hui Su, Shun Lien Chuang

Published Jan 1, 2006• 2 citations
Publisher

Abstract

We demonstrate slow light at room temperature using a quantum-dot semiconductor optical amplifier with a controllable delay by forward and reverse bias below the transparency current level.
DOI
10.1109/cleo.2006.4628103

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We demonstrate room temperature optically and electrically controllable group delay using population oscillation in a quantum-dot (QD) semiconductor optical amplifier (SOA). A reduction of the group index up to 10% with a bandwidth of 13 GHz is achieved under different configurations of injection current and optical pump intensity. Our theoretical results based on population pulsation agree well with experimental data. We extract the linewidth enhancement factor and effective carrier diffusion coefficient of the QD SOA. We also observe slow light when the injection current is increased.