Schmult, Stefan and Keck, Ingo and Herrle, Thomas and Wegscheider, Werner and Bichler, Max and Schuh, Dieter and Abstreiter, Gerhard (2003) Field-effect-induced midinfrared electroluminescence of a quantum-wire-cascade structure by remote d-doping. Applied Physics Letters 83 (10), pp. 1909-1911.
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We present a quantum-cascade emitter in the galliumarsenide/aluminum–galliumarsenide (GaAs/AlGaAs) heterosystem whose emission properties are controlled by an additional electric field perpendicular to the transport direction. In our case, the additional field is established by remote d-doping gives rise to an in-plane confinement creating a quantum- wire cascade. This field-effect quantum- cascade emitter is realized using the cleaved edge overgrowth method. Radiative electronic transitions between discrete energy levels in coupled quantum wires were calculated for such a structure. Without an additional electric field, no significant transport is observed. With a field applied, midinfrared emission is observed at a peak wave number of 1200 cm^–1 with a full width at half maximum of 300 cm^–1 for a heat-sink temperature of 20 K. The presented sample is an experimental proposal for a unipolar quantum-wire intersubband laser.
|Institutions:||Physics > Institute of Experimental and Applied Physics > Retired Professors > Group Werner Wegscheider|
|Projects:||Graduiertenkolleg Nichtlinearität und Nichtgleichgewicht|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Yes|
|Deposited On:||20 Mar 2007|
|Last Modified:||20 Jul 2011 20:59|