Abstract
We have constructed THz spectrometers using the widely frequency-tunable THz-wave generated from GaP crystal pumped at 1.2 μm region using two Cr:forsterite lasers and compared with that pumped at 1 μm region using a YAG laser and an optical parametric oscillator (OPO). The systems have sufficient resolution for observation of solids and liquids at room temperature. We have measured Terahertz absorption spectra of all 20 kinds of amino acids which form proteins.
Original language | English |
---|---|
Pages (from-to) | 923-929 |
Number of pages | 7 |
Journal | International Journal of Infrared and Millimeter Waves |
Volume | 27 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2006 Jul |
Externally published | Yes |
Keywords
- Cr:forsterite
- GaP
- Phase matching
- Raman
- Spectroscopy
- Terahertz wave
ASJC Scopus subject areas
- Radiation
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Condensed Matter Physics
- Physics and Astronomy (miscellaneous)
- Electrical and Electronic Engineering