ID | 114974 |
著者 |
Ichikawa, Ryuji
Tokushima University
謝, 宜達
Tokushima University|JST
Hayashi, Kenta
Tokushima University
チャフヤディ, ハルソノ
Tokushima University|JST
Hindle, Francis
Université du Littoral Côte d’Opale
Sakaguchi, Yoshiyuki
Osaka University
稲場, 肇
JST|National Institute of Advanced Industrial Science and Technology
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資料タイプ |
学術雑誌論文
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抄録 | 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.
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掲載誌名 |
Scientific Reports
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ISSN | 20452322
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出版者 | Springer Nature
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巻 | 5
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開始ページ | 10786
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発行日 | 2015-06-02
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権利情報 | 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/
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言語 |
eng
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出版社版
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部局 |
理工学系
ポストLEDフォトニクス研究所
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