Short wavelength intersubband emission from InAs∕AlSb quantum cascade structures
D. BarateUniversité de MontpellierR. TeissierUMR 5507—CNRS/Université Montpellier 2 Centre d’Électronique et de Microoptoélectronique de Montpellier, , 34095 Montpellier, FranceY. WangUMR 5507—CNRS/Université Montpellier 2 Centre d’Électronique et de Microoptoélectronique de Montpellier, , 34095 Montpellier, FranceА. Н. БарановUMR 5507—CNRS/Université Montpellier 2 Centre d’Électronique et de Microoptoélectronique de Montpellier, , 34095 Montpellier, France
2005en
ABI
Abstract
The InAs∕AlSb material system is a promising candidate for the development of short wavelength quantum cascade lasers because of the large conduction band offset of 2.1 eV. In this letter, we present a study of room temperature electroluminescence of InAs∕AlSb quantum cascade structures as a function of the emission wavelength. Intersubband emission with a transition energy of 500 meV (λ=2.5μm) has been obtained.
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Cited by 30 references