NDLI: Terahertz Conductivity of Copper Surfaces

Content Provider	IEEE Xplore Digital Library
Author	Kirley, M.P. Booske, J.H.
Copyright Year	2011
Abstract	Terahertz (THz) radiation holds great promise for applications in communications, molecular detection, and imaging. Effective THz system design requires accurate models for the frequency-dependent conductivity of metals and the effect of surface roughness on conduction loss. However, predictive methods are currently unverified in the region between 0.3 and 0.9 THz because few experimental data exist in this regime. In order to address this problem, we have measured the conductivity of copper, of various surface roughnesses, using a semi-confocal open resonator system. This paper describes our measurements of the THz conductivity, dc conductivity, roughness, and microstructure of copper. We show that the classical Drude theory is sufficient for predicting the THz conductivity of copper at room temperature and that dissipation loss enhancement caused by surface roughness is modeled better by the Hammerstad-Bekkadal formula than second-order small perturbation theory.
Starting Page	1012
Ending Page	1020
Page Count	9
File Size	2310920
File Format	PDF
ISSN	2156342X
Volume Number	5
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Rough surfaces Surface roughness Conductivity Copper Surface topography Surface waves Optical surface waves terahertz (THz) measurements Conductivity measurements electromagnetic (EM) materials characterization rough surfaces
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Radiation

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Theoretical and Empirical Evaluation of Surface Roughness Effects on Conductivity in the Terahertz Regime

Depolarization of EM waves by slightly rough surfaces

Coupling Between Guided Surface Waves, Lateral Waves, and the Radiation Fields by Rough Surfaces--Full-Wave Solutions

Excitation of Surface Waves and the Scattered Radiation Fields by Rough Surfaces of Arbitrary Slope

Use of supercomputers to evaluate singly and multiply scattered electromagnetic fields from rough surfaces

Electromagnetic scattering from perfectly conducting rough surfaces in the resonance region

High-accuracy topography measurement of optically rough surfaces with THz radiation

Profiling the Rough Surface by Migration

Reflection of electromagnetic waves from rough waveguides

Terahertz Conductivity of Copper Surfaces

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Theoretical and Empirical Evaluation of Surface Roughness Effects on Conductivity in the Terahertz Regime

Depolarization of EM waves by slightly rough surfaces

Coupling Between Guided Surface Waves, Lateral Waves, and the Radiation Fields by Rough Surfaces--Full-Wave Solutions

Excitation of Surface Waves and the Scattered Radiation Fields by Rough Surfaces of Arbitrary Slope

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Terahertz Conductivity of Copper Surfaces