Multiwavelength terahertz-wave parametric generator for one-pulse spectroscopy

• DOI: 10.7567/apex.10.032401
• Publication Date: 2017-02-13T10:14:38Z
• Authors: Kosuke Murate; Shin’ichiro Hayashi; Kodo Kawase
• Keywords: 0103 physical sciences; 01 natural sciences

In this study, the simultaneous generation of multiwavelength terahertz (THz) waves by an injection-seeded THz parametric generator (is-TPG) was achieved for the first time. The output and stability of the multiwavelength THz waves were equivalent to those of the THz waves generated via a single-wavelength is-TPG. Spatial separation of frequencies and high-sensitivity detection were achieved by converting the THz waves to near-infrared detection beams. Furthermore, one-pulse spectroscopy of saccharides was realized, and a dynamic range of more than 60 dB was obtained. The results demonstrated the possibility of using the is-TPG to significantly shorten the measurement times of spectroscopic systems.