TITLE

On the possibility of a shunt-stabilized superlattice terahertz emitter

AUTHOR(S)
Huidong Xu; Teitsworth, Stephen W.
PUB. DATE
January 2010
SOURCE
Applied Physics Letters;1/11/2010, Vol. 96 Issue 2, p022101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
High field electronic transport through a strongly coupled superlattice (SL) with a shunting side layer is numerically studied using a drift-diffusion model that includes both vertical and lateral dynamics. The bias voltage corresponds to an average electric field in the negative differential conductivity region of the intrinsic current-field curve of the SL, a condition that generally implies space charge instability. Key structural parameters associated with both the shunt layer and SL are identified for which the shunt layer stabilizes a uniform electric field profile. These results support the possibility to realize a SL-based terahertz oscillator with a carefully designed structure.
ACCESSION #
47587998

 

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