Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation

By using optical sampling with repetition frequency modulation of pump/probe laser pulses on photoconductive emitter/detector antennas, the high-speed time/frequency domain gigahertz imaging is reported due to the absence of opto-mechanical delay line in this optical scheme. The clear contrast for a...

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Autores principales: Bulgarevich, Dmitry S., Shiwa, Mitsuharu, Furuya, Takashi, Tani, Masahiko
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2016
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908427/
https://www.ncbi.nlm.nih.gov/pubmed/27302877
http://dx.doi.org/10.1038/srep27980
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author Bulgarevich, Dmitry S.
Shiwa, Mitsuharu
Furuya, Takashi
Tani, Masahiko
author_facet Bulgarevich, Dmitry S.
Shiwa, Mitsuharu
Furuya, Takashi
Tani, Masahiko
author_sort Bulgarevich, Dmitry S.
collection PubMed
description By using optical sampling with repetition frequency modulation of pump/probe laser pulses on photoconductive emitter/detector antennas, the high-speed time/frequency domain gigahertz imaging is reported due to the absence of opto-mechanical delay line in this optical scheme. The clear contrast for a 3-cm wide metal plate, which was placed behind a 5-cm thick concrete block, was observed with a 1 × 1 mm image pixilation. On average, it took only ~0.75 s per pixel/waveform acquisition/assignment with a 675 ps time-domain window. This could become a valuable non-destructive evaluation technique in gigahertz spectral range with all benefits of time-domain spectroscopy.
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spelling pubmed-49084272016-06-15 Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation Bulgarevich, Dmitry S. Shiwa, Mitsuharu Furuya, Takashi Tani, Masahiko Sci Rep Article By using optical sampling with repetition frequency modulation of pump/probe laser pulses on photoconductive emitter/detector antennas, the high-speed time/frequency domain gigahertz imaging is reported due to the absence of opto-mechanical delay line in this optical scheme. The clear contrast for a 3-cm wide metal plate, which was placed behind a 5-cm thick concrete block, was observed with a 1 × 1 mm image pixilation. On average, it took only ~0.75 s per pixel/waveform acquisition/assignment with a 675 ps time-domain window. This could become a valuable non-destructive evaluation technique in gigahertz spectral range with all benefits of time-domain spectroscopy. Nature Publishing Group 2016-06-15 /pmc/articles/PMC4908427/ /pubmed/27302877 http://dx.doi.org/10.1038/srep27980 Text en Copyright © 2016, Macmillan Publishers Limited http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Bulgarevich, Dmitry S.
Shiwa, Mitsuharu
Furuya, Takashi
Tani, Masahiko
Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title_full Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title_fullStr Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title_full_unstemmed Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title_short Gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
title_sort gigahertz time-domain spectroscopy and imaging for non-destructive materials research and evaluation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4908427/
https://www.ncbi.nlm.nih.gov/pubmed/27302877
http://dx.doi.org/10.1038/srep27980
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