A comparative study of THz spectra
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概要
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We have constructed two types of THz spectrometers using the frequency-tunable THz wave generators based on difference-frequency generation (DFG) in GaP crystal. The OPO-source system is for high accuracy measurement to detect fine structures in THz absorption spectra. The Cr:F-source system has merit in simple structure, easy maintenance and low-cost, but still has sufficient resolution for room temperature observation of solids or liquids. Comparing the absorption spectra of saccharides measured with these spectrometers and those measured with FT-IR or TDS, our spectrometers have superiority in frequency range and resolution, enough to record sub peaks, which can be analyzed as structural defects in organic compounds. (Contributed by Jun-ichi NISHIZAWA, M.J.A.)
著者
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Nishizawa Jun-ichi
Semiconductor Research Institute, Semiconductor Research Foundation
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Suto Ken
Semiconductor Research Institute, Semiconductor Research Foundation
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Sasaki Tetsuo
Semiconductor Research Institute, Semiconductor Research Foundation
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TANNO Takenori
Semiconductor Research Institute, Semiconductor Research Foundation
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Suto K
Semiconductor Research Institute Semiconductor Research Foundation
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Suto Ken
Telecommunications Advncement Organization Of Japan Sendai Research Center:graduate School Of Materi
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Tanno Takenori
Semiconductor Research Institute Semiconductor Research Foundation
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Sasaki Tetsuo
Semiconductor Research Institute
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Nishizawa J
Telecommunications Advancement Organization Of Japan Sendai Jpn
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Nishizawa Jun-ichi
Telecommunications Advncement Organization Of Japan Sendai Research Center
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Nishizawa Jun-ichi
Semiconductor Research Foundation Semiconductor Research Institute
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Suto Ken
Semiconductor Research Institute Semiconductor Research Foundation
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Saito Kyosuke
Department Of Materials Science Graduate School Of Engineering Tohoku University
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Sasaki Tetsuo
Semiconductor Res. Inst. Sophia Univ.
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SUTO Ken
Semiconductor Research Institute
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TANNO Takenori
Semiconductor Research Institute
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