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High-Frequency Generation in Low-Mobility Superlattices

Published online by Cambridge University Press:  01 February 2011

Vladimir Litvinov  and
Alexander Manasson
Vladimir Litvinov
Affiliation:
WaveBand Corporation, 17152 Armstrong Ave, Irvine, CA 92614
Alexander Manasson
Affiliation:
University of Michigan, Department of Applied Physics, 2477 Randall Lab, Ann Arbor, MI 48109–1120
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Abstract

We study the transport properties of miniband electrons in an electromagnetic field as related to the high-frequency generation in a semiconductor superlattice (SL). We study the regimes where the external ac-field is in resonance and out of resonance with the two lowest SL minibands.

In the diffusive quasi-static regime Bloch oscillations and electrical domains do not develop and high-frequency generation may occur as a result of the negative high-harmonic nonlinear conductivity. This regime is different from the frequency conversion in a stable nonlinear media. We point out that AlGaN/GaN material system has a great potential for the high-power SL terahertz (THz) source.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 831: Symposium E – GaN, AlN, InN, and Their Alloys , 2004 , E11.9
Copyright
Copyright © Materials Research Society 2005

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References

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