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5 October 2015 Two layer metamaterials for selective frequency transmission in the terahertz region (Presentation Recording)
Mayer A. Landau
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Proceedings Volume 9544, Metamaterials, Metadevices, and Metasystems 2015; 95442Q (2015) https://doi.org/10.1117/12.2188966
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States
Abstract
We have fabricated a metamaterial tunable filter for dynamic frequency selection in the terahertz region. The metamaterial consists of a sandwich of two meta-surfaces grown on high resistivity silicon wafers. The first meta-surface consists of a two-dimensional array of gold double split ring resonators and the second meta-surface consisits of an array of gold cut rods. Both meta-surfaces are fabricated for a response in the terahertz region. Our terahertz pulses are produced using the standard Austin switch technique. The terahertz pulse is focused onto the two meta-surfaces which are sandwiched together to produce a transmission window. Together, with the right orientation, translation, and parallelism of the two meta-surfaces, we achieve filtering of terahertz pulses. Since the unit cells for the inclusions are on the order of 100 microns, control of the translation, orientation, and parallelism of the two meta-surfaces with respect to each other and with respect to the orientation and direction of the impinging terahertz field is a challenge. We describe our technique for doing this and present data on our frequency filtering in the terahertz.
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Mayer A. Landau "Two layer metamaterials for selective frequency transmission in the terahertz region (Presentation Recording)", Proc. SPIE 9544, Metamaterials, Metadevices, and Metasystems 2015, 95442Q (5 October 2015); https://doi.org/10.1117/12.2188966
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KEYWORDS
Metamaterials
Gold
Semiconducting wafers
Silicon
Split ring resonators
Switches
Tunable filters
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