P. P. Vasil'ev, R. V. Penty, I. H. White, “Comparison of the coherence properties of superradiance and laser emission in semiconductor structures”, Kvantovaya Elektronika, 2012, Volume 42, Number 12,Pages <nobr>1081

This article is cited in 2 papers

Special issue devoted to the 90th anniversary of N.G.Basov

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

P. P. Vasil'ev^ab, R. V. Penty^b, I. H. White^b

^a P. N. Lebedev Physical Institute, Russian Academy of Sciences, Moscow
^b Centre for Photonic Systems, Department of Electrical Engineering, University of Cambridge, UK

Abstract: 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.

Keywords: superradiance, coherence, semiconductor laser structures, Young's experiment, interference pattern.

PACS: 42.55.Px, 42.25.Kb, 42.25.Hz, 42.50.Nn

Received: 24.10.2012