Guided Modes in Layered Semiconductor Terahertz Structures

Autor:	Karl Unterrainer, Juraj Darmo, D. Dietze
Rok vydání:	2010
Předmět:	Electron mobility Materials science Terahertz radiation business.industry Transcendental equation Metamaterial Condensed Matter Physics Plasma oscillation Polarization (waves) Atomic and Molecular Physics and Optics Optics Dispersion relation Electrical and Electronic Engineering business Plasmon
Zdroj:	IEEE Journal of Quantum Electronics. 46:618-625
ISSN:	1558-1713 0018-9197
DOI:	10.1109/jqe.2010.2047379
Popis:	In this paper, we present a simple and robust method for calculating the dispersion relation of guided modes in layered media with conducting interfaces in the terahertz frequency range. The procedure is based on the transfer matrix method and utilizes a Nelder-Mead simplex algorithm for the solution of the resulting transcendental equations. By applying a semi-analytical approach, the algorithm shows very good convergence behavior even for structures containing metallic layers. Analytic forms of the transcendental equations for transverse electric and transverse magnetic polarization for systems with one to four boundaries are presented. Conducting interfaces can, for instance, be used to describe a 2-D electron gas or a planar metamaterial. We demonstrate the performance of this method by examples which are of current technological interest. These include surface waves bound to surface carriers on p-InAs, a parallel plate waveguide and plasma oscillations in a high electron mobility transistor structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c2cf89bd01784d1b53c617e8bde7c23e https://doi.org/10.1109/jqe.2010.2047379 Zobrazit plný text záznamu