GaP Raman Terahertz high accuracy spectrometer and its application to detect organic and inorganic crystalline defects

One of the most important uses of THz spectrometry is to detect defects in molecular structure or in crystals efficiently. We applied GaP Raman THz (GRT) spectrometer to detect and evaluate defects in inorganic and organic materials. High THz-wave absorption due to high defect density of GaSe crysta...

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Published inProceedings of the Japan Academy, Series B Vol. 82; no. 9; pp. 353 - 358
Main Authors NISHIZAWA, Jun-ichi, SUTO, Ken, SASAKI, Tetsuo, TANABE, Tadao, TANNO, Takenori, OYAMA, Yutaka, SATO, Fumikazu
Format Journal Article
LanguageEnglish
Published Japan The Japan Academy 2006
Subjects
asparagine
defects
GaP Raman THz (GRT) spectrometer
GaSe
glucose
Terahertz
GaP Raman THz (GRT) spectrometer
glucose
asparagine
Terahertz
GaSe
defects
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Summary:One of the most important uses of THz spectrometry is to detect defects in molecular structure or in crystals efficiently. We applied GaP Raman THz (GRT) spectrometer to detect and evaluate defects in inorganic and organic materials. High THz-wave absorption due to high defect density of GaSe crystal lowered the efficiency of THz wave generation, when the crystal is used as nonlinear material for DFG (Difference Frequency Generation). Defects in organic molecules could be observed as changes in frequency, intensities of the absorption, and broadenings of the spectra. (Contributed by NISHIZAWA, Jun-ichi, M.J.A.)
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Contributed by Jun-ichi Nishizawa, m.j.a.
ISSN:0386-2208
1349-2896
DOI:10.2183/pjab.82.353