| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of generating a terahertz electromagnetic wave by employing a compact optical system based on a single excitation laser whereas a conventional terahertz electromagnetic wave generation method employs a terahertz electromagnetic wave light source using nonlinear optical crystal, and to provide a measuring device. SOLUTION: When GaSe crystal having refractive index anisotropy is used as the nonlinear optical crystal, incident light is made incident almost in parallel to a refractive index principal axis to generate the terahertz electromagnetic wave. For the incident light, a high-output light source is used which has a wavelength of≥650 nm. COPYRIGHT: (C)2008,JPO&INPIT
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