Broadband ultra-low-loss mesh filters on flexible cyclic olefin copolymer films for terahertz applications
作者： Fabio Pavanello , Frédéric Garet , Mohan-Babu Kuppam , Emilien Peytavit , Mathias Vanwolleghem
DOI: 10.1063/1.4798522
关键词:
摘要: The cyclic olefin copolymer (COC) has recently demonstrated promising properties for THz applications due to its extremely high transparency in the region. Here, we prove that COC can be efficiently used as substrate material free-space devices through design, fabrication, and characterization of high-pass metal mesh filters. Measurements are good agreement with calculations, a transmittance higher than 75% been measured between 1.5 THz 2.5 THz single-layer filter. In addition, stacked meshes easily embedded improve their rejection ratio stop-band, while preserving pass-band. broadband behavior these filters should extend up diffraction limit estimated at around 6.3 THz
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