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Type: Conference paper
Title: T-ray multilayer interference filter
Author: Withayachumnankul, W.
Fischer, B.
Mickan, S.
Abbott, D.
Citation: Joint 32nd International Conference on Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics, IRMMW-THz:307-308
Publisher: IEEE
Publisher Place: CDROM
Issue Date: 2007
ISBN: 1424414393
Conference Name: IRMMW-THz2007 (2007 : Cardiff, Wales)
Editor: Bob Miles
Abstract: An optical multilayer interference filter is made from two or more different dielectric materials layered in such a way that it promotes constructive/destructive wave interference for a selected frequency in the direction normal to the layers. Usually, each layer has the thickness of a quarter of wavelength at which the stopband is required. In this paper, a quarter-wave interference filter is realised for T-ray applications. The dielectric materials used are high-resistivity silicon and free space, both of which have high transparency to T-rays and flat responses over the frequencies of interest. The designed thickness of both materials is in the order of a hundred microns. The THz-TDS measurement of the finished structure is in agreement with theory.
DOI: 10.1109/icimw.2007.4516511
Appears in Collections:Aurora harvest 6
Electrical and Electronic Engineering publications

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