Investigation of terahertz time-domain spectroscopy using terahertz superfucusing effect
| Project/Area Number |
25410006
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical chemistry
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| Research Institution | University of Fukui |
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Principal Investigator |
Yamamoto Kohji 福井大学, 遠赤外領域開発研究センター, 准教授 (70432507)
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| Co-Investigator(Renkei-kenkyūsha) |
SHIOJIMA Kenji 福井大学, 工学研究科(研究院), 准教授 (70432151)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2015: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
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| Keywords | テラヘルツ / 導波路 / 遠赤外 / テラヘルツ波 / テラヘルツ分光 |
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| Outline of Final Research Achievements |
We have investigated the feasibility of minute-sample terahertz spectroscopy using a metal parallel-plate waveguide with tapered-structure. We carried out terahertz time-domain spectroscopy of L,L-cystine, powdered samples of which were diluted with hydrocarbon-based grease. These mixed samples were sandwiched between metal parallel plates with several hundred-micrometer gap in the THz transmission measurements. We observed both of the sharp absorption peak and the dispersion feature of the refractive index of L,L-cystine at 24 cm-1. We found that background feature of powdered samples in THz absorption spectra possibly due to THz wave scattering was reduced by diluting the samples with the grease. We also obtained the quantitative THz spectra of L,L-cystine in the absorption coefficient spectrum. We succeeded in THz measurements of one-order of magnitude smaller sample of L,L-cystine relative to the sample amount necessary for the traditional terahertz measurements.
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Report
(4 results)
Research Products
(25 results)
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[Journal Article] Highly sensitive electro-optic sampling of terahertz waves using field enhancement in a tapered waveguide structure2014
Author(s)
Satoshi Tsuzuki, Daiki Takeshima, Tomoya Sakon, Tetsuya Kinoshita, Tomohiro Nagase, Kazuyoshi Kurihara, Kohji Yamamoto,Fumiyoshi Kuwashima,Takashi Furuya, Elmer Estacio, Kodo Kawase, Michael I. Bakunov, Masahiko Tani
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Journal Title
Applied Physics Express
Volume: 7
Issue: 11
Pages: 112401-112401
DOI
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Presentation] Towards Broadband THz-TDS: LN Wave-guide THz Emission Super Focused Onto A Reversed Photo-conductive Antenna2014
Author(s)
Gudrun Niehues, Stefan Funkner, Takuya Shirao, Takashi Furuya, Toshihiro Kishibata, Takeshi Okuyama, Yusuke Akamine, Kohji Yamamoto, Fumiyoshi Kuwashima, Kodo Kawase, Masahiko Tani
Organizer
The 39th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz 2014)
Place of Presentation
Tucson, AZ, USA
Year and Date
2014-09-14 – 2014-09-19
Related Report
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