High-resolution GaP terahertz spectrometer and its application to detect defects in gamma-irradiated glucose crystal

Jun Ichi Nishizawa, Tetsuo Sasaki, Ken Suto, Masahiko Ito, Takashi Yoshida, Tadao Tanabe

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We developed high-resolution GaP THz signal generator using Cr:Forsterite lasers with gratings as both a pump and a signal beam for difference-frequency generation. A line width of less than 500 MHz and a wide tunable frequency range (0.6-6.2 THz) provide sufficient resolution for measuring materials with sharp absorption bands using the generator as the light source for a THz spectrometer. This is suitable for materials such as gases or solid samples at low temperatures. We demonstrated the detection of defects in organic materials, as they appear as slight deviations in the absorption frequency in the THz region.

本文言語English
ページ(範囲)291-297
ページ数7
ジャーナルInternational Journal of Infrared and Millimeter Waves
29
3
DOI
出版ステータスPublished - 2008 3
外部発表はい

ASJC Scopus subject areas

  • 放射線
  • 原子分子物理学および光学
  • 器械工学
  • 凝縮系物理学
  • 物理学および天文学(その他)
  • 電子工学および電気工学

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