Room temperature slow light in a quantum-well waveguide via coherent population oscillation

We report room temperature demonstration of slow light propagation via coherent population oscillation (CPO) in a GaAs quantum well waveguide. Measurements of the group delay of an amplitude modulated signal resonant with the heavy-hole exciton transition reveal delays as long as 830 ps. The measure...

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Bibliographic Details
Published in:Optics express 2005-11, Vol.13 (24), p.9909-9915
Main Authors: Palinginis, Phedon, Sedgwick, Forrest, Crankshaw, Shanna, Moewe, Michael, Chang-Hasnain, Connie
Format: Article
Language:English
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Summary:We report room temperature demonstration of slow light propagation via coherent population oscillation (CPO) in a GaAs quantum well waveguide. Measurements of the group delay of an amplitude modulated signal resonant with the heavy-hole exciton transition reveal delays as long as 830 ps. The measured bandwidth, which approaches 100 MHz, is related to the lifetime of the photoexcited electron-hole (e-h) plasma as expected for CPO process.
ISSN:1094-4087
1094-4087
DOI:10.1364/opex.13.009909