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

Journal Article · Wed May 28 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4879317· OSTI ID:22304356

Sydoruk, O., E-mail: [e-mail] ^[1]

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1. Optical and Semiconductor Devices Group, Department of Electrical and Electronic Engineering, Imperial College London, Exhibition Road, London SW7 2AZ (United Kingdom)

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.

• OSTI ID: 22304356
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFICATION
ASYMMETRY
CURRENTS
DISTRIBUTION
ELECTRONS
OSCILLATORS
PLASMONS
SIMULATION
SPECTRA
TWO-DIMENSIONAL CALCULATIONS