Mid-infrared intersubband emission from
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A. Sa'ar; Y. Lavon; F.H. Julien; P. Boucaud; J. Wang; J.-P. Leburton; R. Planel
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Article
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1997
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Elsevier Science
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English
β 230 KB
Mid-infrared optical emission due to intersubband transitions between excited conduction subbands of a coupled quantum well structure is studied. The emission process is based on optical pumping of free carriers from the ground subband into the third subband followed by a radiative transition from t