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Conferences > CLEO_Europe > 1996 > CMN > CMN3

Optically pumped mid-infrared intersubband emission and lasing in coupled quantum wells

A Sa’ar, Y Lavon, F. H. Julien, Z Moussa, J. Wang, J -P Leburton, and R Planel

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Abstract

Mid infrared semiconductor lasers that are based on population inversion between conduction subbands of a quantum well (QW) structure have attracted much attention recently. Faist el al [1] demonstrated the operation of the quantum cascade laser which is a unipolar intersubband injection laser Another scheme to generate population inversion between conduction subbands is by optical pumping [2], In this contribution we summarize our recent experimental and theoretical results including the observation of mid-infrared emission from a GaAs/AlGaAs coupled QWs (CQW) structure [3-4] (see Fig. 1).

© 1996 IEEE

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