On the possibility of a shunt-stabilized superlattice terahertz emitter | Zendy

Huidong Xu | Zendy; Stephen W. Teitsworth | Zendy

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On the possibility of a shunt-stabilized superlattice terahertz emitter

Author(s) -

Huidong Xu,

Stephen W. Teitsworth

Publication year - 2010

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3291614

Subject(s) - superlattice , terahertz radiation , electric field , space charge , condensed matter physics , shunt (medical) , common emitter , voltage , optoelectronics , gunn diode , physics , instability , materials science , optics , diode , electron , mechanics , quantum mechanics , medicine , cardiology

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. © 2010 American Institute of Physics

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