Flexible terahertz wire grid polarizer with high extinction ratio and low loss
journal contribution
posted on 2023-06-09, 00:46 authored by A Ferraro, D C Zografopulos, M Missori, Marco Peccianti, R Caputo, R BeccherelliAn aluminum-based THz wire grid polarizer is theoretically investigated and experimentally demonstrated on a sub-wavelength thin flexible and conformal foil of the cyclo-olefin Zeonor© polymer. THz time-domain spectroscopy characterization, performed on both flat and curved configurations, reveals a high extinction ratio between 40 and 45 dB in the 0.3-1 THz range and in excess of 30 dB up to 2.5 THz. The insertion losses are lower than 1 dB and are almost exclusively due to moderate Fabry-Perót reflections, which vanish at targeted frequencies. The polarizer can be easily fabricated with low-cost techniques such as roll-to-roll and/or large area electronics processes and promises to pen the way for a new class of flexible and conformal THz devices.
Funding
Route to guided TeraHertz backscattering Inspection and Analysis : THEIA; G1308; EUROPEAN UNION; PCIG14-GA-2013-630833
History
Publication status
- Published
File Version
- Accepted version
Journal
Optics LettersISSN
0146-9592Publisher
Optical Society of AmericaExternal DOI
Issue
9Volume
41Page range
2009-2012Department affiliated with
- Mathematics Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-04-05First Open Access (FOA) Date
2017-04-22First Compliant Deposit (FCD) Date
2016-04-05Usage metrics
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