Metasurface-Based Anti-Alias Filters for Improved THz-TDS Measurements

Nazar Nikolaev, Rybak Alina, Sergei Kuznetsov, Shang Hua Yang

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

We propose an approach to improve the accuracy and speed of THz-TDS measurements in the low-frequency regime. It is based on applying anti-alias filters to narrow the frequency band of the THz signal that allows increasing the sampling interval in accordance with the Nyquist-Shannon theorem. The concept was verified by studying the transmittance spectra of the reference samples-band-pass THz filters centered at 156 and 376 GHz. We show a reduction of the spectrometer scanning time by an order of magnitude and an increase in measurement accuracy due to eliminating a long-term signal drift.

Original languageEnglish
Title of host publicationIRMMW-THz 2019 - 44th International Conference on Infrared, Millimeter, and Terahertz Waves
PublisherIEEE Computer Society
ISBN (Electronic)9781538682852
DOIs
Publication statusPublished - 1 Sep 2019
Event44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019 - Paris, France
Duration: 1 Sep 20196 Sep 2019

Publication series

NameInternational Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz
Volume2019-September
ISSN (Print)2162-2027
ISSN (Electronic)2162-2035

Conference

Conference44th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2019
CountryFrance
CityParis
Period01.09.201906.09.2019

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