Terahertz intersubband electroluminescence from GaN/AlGaN quantum cascade laser structure on AlGaN template

We demonstrate terahertz (THz) electroluminescence (EL) from a GaN/AlGaN quantum cascade laser (QCL) structure fabricated on an AlGaN template. From investigations of a polarization - and a voltage-dependence of the EL from the THz-QCL, we proved conclusively intersubband nature of the EL peak.

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Bibliographic Details
Published in2011 International Conference on Infrared, Millimeter, and Terahertz Waves pp. 1 - 2
Main Authors Terashima, W., Hirayama, H.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2011
Subjects
Aluminum gallium nitride
Frequency measurement
Gallium nitride
Periodic structures
Quantum cascade lasers
Voltage measurement
X-ray scattering
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Summary:We demonstrate terahertz (THz) electroluminescence (EL) from a GaN/AlGaN quantum cascade laser (QCL) structure fabricated on an AlGaN template. From investigations of a polarization - and a voltage-dependence of the EL from the THz-QCL, we proved conclusively intersubband nature of the EL peak.
ISBN:1457705109
9781457705106
ISSN:2162-2027
DOI:10.1109/irmmw-THz.2011.6105201