Quantum-cascade lasers based on a bound-to-continuum transition

A quantum-cascade structure combining the advantages of the three-quantum well and superlattice active regions is demonstrated. In these devices, the emission occurs between a state localized close to the injection barrier and a miniband. A low threshold current density (3.6 kA/cm2), large slope eff...

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Bibliographic Details
Published in:Applied physics letters 2001-01, Vol.78 (2), p.147-149
Main Authors: Faist, Jérôme, Beck, Mattias, Aellen, Thierry, Gini, Emilio
Format: Article
Language:English
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Summary:A quantum-cascade structure combining the advantages of the three-quantum well and superlattice active regions is demonstrated. In these devices, the emission occurs between a state localized close to the injection barrier and a miniband. A low threshold current density (3.6 kA/cm2), large slope efficiency (200 mW/A for 35 periods), and peak power (700 mW) are achieved at 30 °C while a peak power of 90 mW is obtained at temperatures as high as 150 °C.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1339843