title: Polarization insensitive, broadband terahertz metamaterial absorber.
abstract: We present the simulation, implementation, and measurement of a polarization insensitive broadband resonant terahertz metamaterial absorber. By stacking metal-insulator layers with differing structural dimensions, three closely positioned resonant peaks are merged into one broadband absorption spectrum. Greater than 60% absorption is obtained across a frequency range of 1.86 THz where the central resonance frequency is 5 THz. The FWHM of the device is 48%, which is two and half times greater than the FWHM of a single layer structure. Such metamaterials are promising candidates as absorbing elements for bolometric terahertz imaging.
authors: School of Engineering, University of Glasgow, Glasgow, United Kingdom.
authors: James
authors: J
authors: Grant
authors: Yong
authors: Y
authors: Ma
authors: Shimul
authors: S
authors: Saha
authors: Ata
authors: A
authors: Khalid
authors: David R S
authors: DR
authors: Cumming