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Title: Amplification and generation of terahertz plasmons in gated two-dimensional channels: Modal analysis

A theoretical analysis is presented of plasmons in gated two-dimensional electron channels supporting dc currents. In contrast to previous treatments, the model takes into account complete mode spectra and transverse field distributions. Conditions for plasmon amplification are determined, and asymmetric plasmonic oscillators are analysed. The results are compared with the traditional treatment of the Dyakonov-Shur instability. The limitations of the traditional treatment are thus revealed. The present electrodynamically rigorous model can be used to design and analyse terahertz plasmonic oscillators.
Authors:
 [1]
  1. Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom)
Publication Date:
OSTI Identifier:
22304356
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMPLIFICATION; ASYMMETRY; CURRENTS; DISTRIBUTION; ELECTRONS; OSCILLATORS; PLASMONS; SIMULATION; SPECTRA; TWO-DIMENSIONAL CALCULATIONS