Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers
Terahertz (THz) dual comb spectroscopy (DCS) is a promising method for high-accuracy, high-resolution, broadband THz spectroscopy because the mode-resolved THz comb spectrum includes both broadband THz radiation and narrow-line CW-THz radiation characteristics. In addition, all frequency modes of a...
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| Format: | Online |
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Nature Publishing Group
2015
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451697/ |
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pubmed-44516972015-06-09 Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers Yasui, Takeshi Ichikawa, Ryuji Hsieh, Yi-Da Hayashi, Kenta Cahyadi, Harsono Hindle, Francis Sakaguchi, Yoshiyuki Iwata, Tetsuo Mizutani, Yasuhiro Yamamoto, Hirotsugu Minoshima, Kaoru Inaba, Hajime Article Terahertz (THz) dual comb spectroscopy (DCS) is a promising method for high-accuracy, high-resolution, broadband THz spectroscopy because the mode-resolved THz comb spectrum includes both broadband THz radiation and narrow-line CW-THz radiation characteristics. In addition, all frequency modes of a THz comb can be phase-locked to a microwave frequency standard, providing excellent traceability. However, the need for stabilization of dual femtosecond lasers has often hindered its wide use. To overcome this limitation, here we have demonstrated adaptive-sampling THz-DCS, allowing the use of free-running femtosecond lasers. To correct the fluctuation of the time and frequency scales caused by the laser timing jitter, an adaptive sampling clock is generated by dual THz-comb-referenced spectrum analysers and is used for a timing clock signal in a data acquisition board. The results not only indicated the successful implementation of THz-DCS with free-running lasers but also showed that this configuration outperforms standard THz-DCS with stabilized lasers due to the slight jitter remained in the stabilized lasers. Nature Publishing Group 2015-06-02 /pmc/articles/PMC4451697/ /pubmed/26035687 http://dx.doi.org/10.1038/srep10786 Text en Copyright © 2015, 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/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Yasui, Takeshi Ichikawa, Ryuji Hsieh, Yi-Da Hayashi, Kenta Cahyadi, Harsono Hindle, Francis Sakaguchi, Yoshiyuki Iwata, Tetsuo Mizutani, Yasuhiro Yamamoto, Hirotsugu Minoshima, Kaoru Inaba, Hajime |
| spellingShingle |
Yasui, Takeshi Ichikawa, Ryuji Hsieh, Yi-Da Hayashi, Kenta Cahyadi, Harsono Hindle, Francis Sakaguchi, Yoshiyuki Iwata, Tetsuo Mizutani, Yasuhiro Yamamoto, Hirotsugu Minoshima, Kaoru Inaba, Hajime Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| author_facet |
Yasui, Takeshi Ichikawa, Ryuji Hsieh, Yi-Da Hayashi, Kenta Cahyadi, Harsono Hindle, Francis Sakaguchi, Yoshiyuki Iwata, Tetsuo Mizutani, Yasuhiro Yamamoto, Hirotsugu Minoshima, Kaoru Inaba, Hajime |
| author_sort |
Yasui, Takeshi |
| title |
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| title_short |
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| title_full |
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| title_fullStr |
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| title_full_unstemmed |
Adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| title_sort |
adaptive sampling dual terahertz comb spectroscopy using dual free-running femtosecond lasers |
| description |
Terahertz (THz) dual comb spectroscopy (DCS) is a promising method for high-accuracy, high-resolution, broadband THz spectroscopy because the mode-resolved THz comb spectrum includes both broadband THz radiation and narrow-line CW-THz radiation characteristics. In addition, all frequency modes of a THz comb can be phase-locked to a microwave frequency standard, providing excellent traceability. However, the need for stabilization of dual femtosecond lasers has often hindered its wide use. To overcome this limitation, here we have demonstrated adaptive-sampling THz-DCS, allowing the use of free-running femtosecond lasers. To correct the fluctuation of the time and frequency scales caused by the laser timing jitter, an adaptive sampling clock is generated by dual THz-comb-referenced spectrum analysers and is used for a timing clock signal in a data acquisition board. The results not only indicated the successful implementation of THz-DCS with free-running lasers but also showed that this configuration outperforms standard THz-DCS with stabilized lasers due to the slight jitter remained in the stabilized lasers. |
| publisher |
Nature Publishing Group |
| publishDate |
2015 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4451697/ |
| _version_ |
1613230405779980288 |