Research output: Contribution to journal › Article › peer-review
Application of Capacitive Microstructures as Anti-Aliasing Filters for Terahertz Time-Domain Spectroscopy. / Rybak, A. A.; Nikolaev, N. A.; Kuznetsov, S. A. et al.
In: Optoelectronics, Instrumentation and Data Processing, Vol. 56, No. 1, 01.01.2020, p. 101-108.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Application of Capacitive Microstructures as Anti-Aliasing Filters for Terahertz Time-Domain Spectroscopy
AU - Rybak, A. A.
AU - Nikolaev, N. A.
AU - Kuznetsov, S. A.
AU - Yang, Sh H.
N1 - Funding Information: This work was funded by the Ministry of Science and Higher Education of the Russian Federation (State Registration AAAA-A17-117052410033-9) and the Russian Foundation for Basic Research (Project No. 18-29-20066)
PY - 2020/1/1
Y1 - 2020/1/1
N2 - This paper first considers an approach based on the application of high-performance capacitive microstructures as anti-aliasing filters for low-frequency (sub-terahertz) measurements in terahertz time-domain spectroscopy. The approach was tested in measurements of the spectra of reference samples — bandpass filters with central frequencies of 156 and 376 GHz and a bandwidth of ∼12%. It is shown that the spectrometer measurement time is decreased by a factor of up to 12 with an improvement in measurement accuracy due to the elimination of the long-term drift of the normalization signal. This approach is supposed to be used to increase the dynamic range and the spectrometer signal-to-noise ratio in the sub-terahertz region.
AB - This paper first considers an approach based on the application of high-performance capacitive microstructures as anti-aliasing filters for low-frequency (sub-terahertz) measurements in terahertz time-domain spectroscopy. The approach was tested in measurements of the spectra of reference samples — bandpass filters with central frequencies of 156 and 376 GHz and a bandwidth of ∼12%. It is shown that the spectrometer measurement time is decreased by a factor of up to 12 with an improvement in measurement accuracy due to the elimination of the long-term drift of the normalization signal. This approach is supposed to be used to increase the dynamic range and the spectrometer signal-to-noise ratio in the sub-terahertz region.
KW - bandpass filters
KW - frequency-selective surfaces
KW - low-pass filters
KW - metamaterials
KW - microstructures
KW - sampling theorem
KW - terahertz time-domain spectroscopy
KW - SPECTROMETER
KW - SUBTERAHERTZ
KW - METALLIC MESH
KW - GENERATION
KW - MESH INTERFERENCE FILTERS
UR - http://www.scopus.com/inward/record.url?scp=85089025454&partnerID=8YFLogxK
U2 - 10.3103/S8756699020010136
DO - 10.3103/S8756699020010136
M3 - Article
AN - SCOPUS:85089025454
VL - 56
SP - 101
EP - 108
JO - Optoelectronics, Instrumentation and Data Processing
JF - Optoelectronics, Instrumentation and Data Processing
SN - 8756-6990
IS - 1
ER -
ID: 26145367