Modeling of plasma oscillations and terahertz photomixing in HEMT-like heterostructure with lateral Schottky junction

Maxim Ryzhii, Irina Khmyrova, Victor Ryzhii, Taiichi Otsuji, Michael S. Shur

Research output: Contribution to journalConference articlepeer-review

Abstract

We study theoretically a heterostructure device with the structure akin to a high-electron mobility transistor which can be used to generate electro-magnetic radiation in the terahertz range of frequencies. The gated electron channel is supplied with a lateral Schottky contact serving as the source. The operation of the device is associated with photomixing of optical signals in high-electric-field depletion region of the Schottky junction. The electrons and holes photogenerated in the Schottky junction depletion region and propagating across it induce the ac current in the quasi-neutral electron channel which, in turn, excites the plasma oscillations in this channel. Fast electron transport in the Schottky junction depletion region and resonant properties of the electron channel provide an enhanced response of the photomixer to optical signals at the plasma frequencies.

Original languageEnglish
Article number60390K
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6039
DOIs
Publication statusPublished - 2006 Mar 31
EventComplex Systems - Brisbane, Australia
Duration: 2005 Dec 122005 Dec 14

Keywords

  • Photomixer
  • Plasma oscillations
  • Schottky junction
  • Terahertz

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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