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WIDE RANGE DETECTOR USING PARABOLIC CYLINDRICAL MIRROR FOR THz APPLICATIONS

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Abstract

A new, wide-band, high-speed and high-sensitivity THz detector has been developed. The prototype detector consists of a parabolic cylindrical mirror, a long wire antenna and a Schottky barrier diode. Direct detection measurements have shown a stable sensitivity of 150 ± 50 V/W for 1–2 THz without any adjustments. The long wire antenna was fixed at the focus of parabolic cylindrical mirror then it has been realized less operation steps, easy coupling to the external THz signals and a dramatic enhancement in the practicality of this system. The optically polished mirror and frosted surface one showed comparable sensitivities, thus easy polishing and less cost mirror fabrication can be applied for this system. The radiation pattern showed a maximum radiation angle of approximately 23° with its dominant main lobe, which was attributed to the wire antenna character and confirmed good agreements with classical antenna theory.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomiok, Nagaoka Niigata, 940-2188, Japan

    Takanari Yasui & Takeshi Ohtsuka

  2. Department Information and Communication Engineering, Sendai National College of Technology, 4-16-1 Chuuou, Ayashi, Aoba-ku, Sendai Miyagi, 989-3128, Japan

    Tetsu Suzuki

  3. College of Engineering, Chubu University, Kasugai, Aichi, 487-8501, Japan

    Shigeki Okajima & Kazuya Nakayama

  4. Hakkai Creates, 2845, Yamato-machi, Kokonoka-machi, Minami Uonuma-gun, Niigata, 949-7312, Japan

    Mitsuru Tomioka, Katsuhiro Kamimura & Takeo Namekata

  5. Tere-Photonics Team, Photodynamics Research Center RIKEN, 519-1399, Aoba, Aramaki Aoba-ku, Sendai Miyagi, 980-0845, Japan

    Hiroaki Minamide & Hiromasa Ito

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  1. Takanari Yasui
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  2. Takeshi Ohtsuka
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  4. Shigeki Okajima
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  9. Hiroaki Minamide
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  10. Hiromasa Ito
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Yasui, T., Ohtsuka, T., Suzuki, T. et al. WIDE RANGE DETECTOR USING PARABOLIC CYLINDRICAL MIRROR FOR THz APPLICATIONS. Int J Infrared Milli Waves 27, 199–210 (2006). https://doi.org/10.1007/s10762-006-9068-9

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  • DOI: https://doi.org/10.1007/s10762-006-9068-9

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