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CW THz spectroscopy of polymers using plasmonic surface-wave sensors

Göbel, Thorsten and Koeberle, Markus and Meissner, Peter and Jakoby, Rolf (2008):
CW THz spectroscopy of polymers using plasmonic surface-wave sensors.
In: Frequenz, pp. 79-83, 3-4, [Article]

Abstract

Lamellar metal gratings with sub-wavelength slits have been fabricated and characterized. They feature a transmission resonance which is highly sensitive to material layers attached to the grating surface. At first, gratings with resonant features at 85GHz are investigated. The transmission spectrum recorded with a commercial Vector Network Analyzer is in good agreement with the data obtained from a photoconductive continuous-wave THz system. Further, the grating dimensions are scaled down for an operation frequency of 430GHz. Sandwiched between polymer foils, the transmission resonance of the grating is shifted in frequency and the permittivity of the layers is extracted from the induced shift with an analytical model. The received results coincide with literature data very well.

Item Type: Article
Erschienen: 2008
Creators: Göbel, Thorsten and Koeberle, Markus and Meissner, Peter and Jakoby, Rolf
Title: CW THz spectroscopy of polymers using plasmonic surface-wave sensors
Language: English
Abstract:

Lamellar metal gratings with sub-wavelength slits have been fabricated and characterized. They feature a transmission resonance which is highly sensitive to material layers attached to the grating surface. At first, gratings with resonant features at 85GHz are investigated. The transmission spectrum recorded with a commercial Vector Network Analyzer is in good agreement with the data obtained from a photoconductive continuous-wave THz system. Further, the grating dimensions are scaled down for an operation frequency of 430GHz. Sandwiched between polymer foils, the transmission resonance of the grating is shifted in frequency and the permittivity of the layers is extracted from the induced shift with an analytical model. The received results coincide with literature data very well.

Journal or Publication Title: Frequenz
Volume: 3-4
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics > Microwave Engineering
18 Department of Electrical Engineering and Information Technology
18 Department of Electrical Engineering and Information Technology > Institute for Microwave Engineering and Photonics
Date Deposited: 27 Jan 2012 15:19
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