Improving the technique of terahertz time-domain spectroscopy by means of antialiasing filtration and undersampling

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Improving the technique of terahertz time-domain spectroscopy by means of antialiasing filtration and undersampling. / Николаев, Назар Александрович ; Рыбак, Алина Анатольевна ; Кузнецов, Сергей Александрович.

в: Proceedings of SPIE - The International Society for Optical Engineering, Том 12776, 127760G, 26.11.2023.

Результаты исследований: Научные публикации в периодических изданиях › статья по материалам конференции › Рецензирование

BibTeX

@article{2947e901fc6f4045a62b10d6f1d817d7,

title = "Improving the technique of terahertz time-domain spectroscopy by means of antialiasing filtration and undersampling",

abstract = "Approaches based on antialiasing filtration and decimation (subsampling or undersampling) to improve the accuracy and acquisition time of terahertz time-domain spectrometers are proposed. Both rely on preliminary THz-signal filtering and frequency band reduction, followed by sampling interval increasing in accordance with the sampling theorem. The key elements for the task are quasi-optical band-pass (BPFs) and low-pass filters (LPFs). The carefully modeled metasurface design of the multi-layered interference-based microstructures permits the high performance of the filters. They provide a bandwidth of 5% for BPFs and a sharp cut-off edge for LPFs, as well as more than 40 dB out-of-band suppression, although metasurface geometries are based on trivial capacitive and inductive square elements: slits for BPFs and patches for LPFs.",

author = "Николаев, {Назар Александрович} and Рыбак, {Алина Анатольевна} and Кузнецов, {Сергей Александрович}",

note = "The work is supported by the Ministry of Science and Higher Education of the Russian Federation within the state assignment project of the Institute of Automation and Electrometry SB RAS and Novosibirsk State University (project #FSUS-2020-0029). The authors acknowledge the Shared Equipment Center CKP “VTAN” (ATRC) of the NSU Physics Department for the technological support and the Shared Equipment Center “Spectroscopy and Optics” of the IA&E SB RAS for the instrumental support provided.; Infrared, Millimeter-Wave, and Terahertz Technologies X 2023 ; Conference date: 15-10-2023 Through 16-10-2023",

year = "2023",

month = nov,

day = "26",

doi = "10.1117/12.2687656",

language = "English",

volume = "12776",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

}

RIS

TY - JOUR

T1 - Improving the technique of terahertz time-domain spectroscopy by means of antialiasing filtration and undersampling

AU - Николаев, Назар Александрович

AU - Рыбак, Алина Анатольевна

AU - Кузнецов, Сергей Александрович

N1 - Conference code: 10

PY - 2023/11/26

Y1 - 2023/11/26

N2 - Approaches based on antialiasing filtration and decimation (subsampling or undersampling) to improve the accuracy and acquisition time of terahertz time-domain spectrometers are proposed. Both rely on preliminary THz-signal filtering and frequency band reduction, followed by sampling interval increasing in accordance with the sampling theorem. The key elements for the task are quasi-optical band-pass (BPFs) and low-pass filters (LPFs). The carefully modeled metasurface design of the multi-layered interference-based microstructures permits the high performance of the filters. They provide a bandwidth of 5% for BPFs and a sharp cut-off edge for LPFs, as well as more than 40 dB out-of-band suppression, although metasurface geometries are based on trivial capacitive and inductive square elements: slits for BPFs and patches for LPFs.

AB - Approaches based on antialiasing filtration and decimation (subsampling or undersampling) to improve the accuracy and acquisition time of terahertz time-domain spectrometers are proposed. Both rely on preliminary THz-signal filtering and frequency band reduction, followed by sampling interval increasing in accordance with the sampling theorem. The key elements for the task are quasi-optical band-pass (BPFs) and low-pass filters (LPFs). The carefully modeled metasurface design of the multi-layered interference-based microstructures permits the high performance of the filters. They provide a bandwidth of 5% for BPFs and a sharp cut-off edge for LPFs, as well as more than 40 dB out-of-band suppression, although metasurface geometries are based on trivial capacitive and inductive square elements: slits for BPFs and patches for LPFs.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85180155207&origin=inward&txGid=d8374b46c104c503004cda94315bc9bf

UR - https://www.mendeley.com/catalogue/f92b5578-9209-3d2e-b731-a7f344dbbf13/

U2 - 10.1117/12.2687656

DO - 10.1117/12.2687656

M3 - Conference article

VL - 12776

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

SN - 0277-786X

M1 - 127760G

T2 - Infrared, Millimeter-Wave, and Terahertz Technologies X 2023

Y2 - 15 October 2023 through 16 October 2023

ER -

ID: 59398912