Spectral measurement of terahertz vibrations of biomolecules using a GaP terahertz-wave generator with automatic scanning control

摘要

Having previously generated frequency-tunable terahertz (THz) waves from GaP, we constructed a THz spectral measurement system with an automatic scanning control. We demonstrate the use of this THz spectrometer for measuring the transmittance spectra Of D-(+)-glucose, 2-deoxy-D-glucose, D-(-)-fructose, and D-(+)-sucrose in the 0.8 to 5.5 THz (25 to 185 cm(-1)) frequency region with a spectral resolution of 3.2 GHz (0.1 cm(-1)), using a pyroelectric detector operated at room temperature. Each crystalline saccharide had different spectral features. [References: 28]