Widely tunable coherent terahertz-wave generation using nonlinear optical effect

Kodo Kawase, Junichi Shikata, Manabu Sato, Tetsuo Taniuchi, Hiromasa Ito

研究成果: Article査読

4 被引用数 (Scopus)


By using room-temperature parametric oscillation of LiNbO3 pumped by a Q-switched Nd: YAG laser, a tunable terahertz-wave source in the range between 1 and 2 THz has been realized with a simple configuration. Since the terahertz wave is strongly absorbed inside the crystal and is affected by total internal reflection at the crystal edge, terahertz radiation outside the crystal has been difficult. A grating coupler and a prism coupler have resulted in wide tunability, high efficiency, and high spatial coherency. In this paper, the basic configuration of the optical source, various radiation characteristics, and the terahertz spectroscopic system using the present source are described.

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学


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