A Broadband Micro-machined Far-Infrared Absorber

Abstract

The experimental investigation of a broadband far-infrared meta-material absorber is described. The observed absorptance is $>0.95$ from $1-20\mathrm{THz}$ ($300-15\mu \mathrm{m}$) over a temperature range spanning $5-300\mathrm{K}$. The meta-material, realized from an array of tapers $\approx 100\mu \mathrm{m}$ 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.

arXiv comment6 pages, 2 figures, published -- Review of Scientific Instruments 87, 054701 (2016)

References in corpus (5)

• Ultra-broadband Microwave Metamaterial Absorber
• Calibrator Design for the COBE Far Infrared Absolute Spectrophotometer (FIRAS)
• Effective medium theory of the optical properties of aligned carbon nanotubes
• Large-aperture wide-bandwidth antireflection-coated silicon lenses for millimeter wavelengths
• A Cryogenic Infrared Calibration Target

Cited by in corpus (4)

• The Simons Observatory: Metamaterial Microwave Absorber (MMA) and its Cryogenic Applications
• A Compact Cryogenic Thermal Source for Detector Array Characterization
• Thin flexible multi-octave metamaterial absorber for millimetre wavelengths
• NEW-MUSIC: The Next-generation Extended-Wavelength Multiband Sub/millimeter Inductance Camera