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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
Published on: December 27, 2012
A broadband micro-machined far-infrared absorber
E J Wollack1, A M Datesman1, C A Jhabvala1
1NASA Goddard Space Flight Center, Greenbelt, Maryland 20771, USA.
Abstract:
The experimental investigation of a broadband far-infrared meta-material absorber is described. The observed absorptance is >0.95 from 1 to 20 THz (300-15 μm) over a temperature range spanning 5-300 K. The meta-material, realized from an array of tapers ≈100 μm in length, is largely insensitive to the detailed geometry of these elements and is cryogenically compatible with silicon-based micro-machined technologies. The electromagnetic response is in general agreement with a physically motivated transmission line model.
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