Comparison of the coherence properties of superradiance and laser emission in semiconductor structures

The coherence properties of a transient electron - hole state developing during superradiance emission in semiconductor laser structures have been studied experimentally using a Michelson interferometer and Young's classic double-slit configuration. The results demonstrate that, in the lasers s...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2012-12, Vol.42 (12), p.1081-1086
Main Authors: Vasil'ev, Petr P, Penty, R V, White, I H
Format: Article
Language:English
Subjects:
COMPARATIVE EVALUATIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CORRELATION FUNCTIONS
ELECTRON-HOLE COUPLING
MICHELSON INTERFEROMETER
NUCLEAR PHYSICS AND RADIATION PHYSICS
PHASE TRANSFORMATIONS
SEMICONDUCTOR LASERS
SEMICONDUCTOR MATERIALS
SUPERRADIANCE
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Summary:The coherence properties of a transient electron - hole state developing during superradiance emission in semiconductor laser structures have been studied experimentally using a Michelson interferometer and Young's classic double-slit configuration. The results demonstrate that, in the lasers studied, the first-order correlation function, which quantifies spatial coherence, approaches unity for superradiant emission and is 0.2 - 0.5 for laser emission. The supercoherence is due to long-range ordering upon the superradiant phase transition. (special issue devoted to the 90th anniversary of n.g. basov)
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2012v042n12ABEH015031