TY - JOUR

T1 - Application of metasurface-based low-pass filters for improving THz-TDS characteristics

AU - Nikolaev, N. A.

AU - Rybak, A. A.

AU - Kuznetsov, S. A.

PY - 2020/4/23

Y1 - 2020/4/23

N2 - We propose an approach to improve the technical characteristics of terahertz time-domain spectrometers at low-frequency measurements. The approach is based on applying low-pass THz filters to narrow the frequency band of the THz signal that allows increasing the sampling interval in accordance with the Nyquist-Shannon theorem. This concept was verified by studying the transmission spectra of low-frequency band-pass THz filters centered at 156 and 376 GHz. We confirm that the high-quality low-pass filters can improve accuracy of THz measurements and significantly reduce data acquisition time. The reduction up to 12 times was experimentally demonstrated in our case.

AB - We propose an approach to improve the technical characteristics of terahertz time-domain spectrometers at low-frequency measurements. The approach is based on applying low-pass THz filters to narrow the frequency band of the THz signal that allows increasing the sampling interval in accordance with the Nyquist-Shannon theorem. This concept was verified by studying the transmission spectra of low-frequency band-pass THz filters centered at 156 and 376 GHz. We confirm that the high-quality low-pass filters can improve accuracy of THz measurements and significantly reduce data acquisition time. The reduction up to 12 times was experimentally demonstrated in our case.

UR - http://www.scopus.com/inward/record.url?scp=85084149674&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1461/1/012118

DO - 10.1088/1742-6596/1461/1/012118

M3 - Conference article

AN - SCOPUS:85084149674

VL - 1461

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012118

T2 - 4th International Conference on Metamaterials and Nanophotonics, METANANO 2019

Y2 - 15 July 2019 through 19 July 2019

ER -