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Opt Express. 2005 Nov 28;13(24):9909-15.

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

Abstract

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.

PMID:
19503201
[PubMed]
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