A New Artificial Dielectric Metamaterial and its Application as a THz Anti-Reflection Coating

Abstract

We describe a novel artificial dielectric material which has applications at millimetre and submillimetre wavelengths. The material is manufactured from layers of metal mesh patterned onto thin polypropylene sheets which are then bonded together using a hot pressing process to provide planar rugged discs which can be reliably cycled to cryogenic temperatures. The refractive index of this material can be tuned by adjusting the geometry and spacing of the metal-mesh layers. We demonstrate its usage by designing and characterising a broadband anti-reflection coating for a Z-cut crystalline Quartz plate. The coating was fabricated and applied to the quartz using the hot press technique and characterized using a Fourier Transform Spectrometer. The performance is shown to be in good agreement with HFSS and transmission line modelling results.

15 pages, 12 Figures, 1 Table

References in corpus (5)

• Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients
• The South Pole Telescope
• Optical Design of the Atacama Cosmology Telescope and the Millimeter Bolometric Array Camera
• The Balloon-borne Large Aperture Submillimeter Telescope: BLAST
• The Planck High Frequency Instrument, a 3rd generation CMB experiment, and a full sky submillimeter survey

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• The balloon-borne large-aperture submillimeter telescope for polarimetry: BLAST-Pol
• Development of large radii half-wave plates for CMB satellite missions
• Polypropylene Embedded Metal-Mesh Broadband Achromatic Half Wave Plate for Millimeter Wavelengths
• Deep Reactive Ion Etched Anti-Reflection Coatings for Sub-millimeter Silicon Optics
• The next-generation BLASTPol experiment
• Experimental Realization of an Achromatic Magnetic Mirror based on Metamaterials
• The Balloon-borne Large Aperture Submillimeter Telescope for Polarimetry-BLASTPol: Performance and results from the 2012 Antarctic flight
• Generalized Huygens' condition as the fulcrum of planar nonlocal omnidirectional transparency: from meta-atoms to metasurfaces
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• Broadband anti-reflection coating for sub-terahertz optics using dielectric multilayers