Terahertz wave generation apparatus and inspection apparatus

A terahertz wave generation apparatus comprising:

• a plurality of fiber laser light sources configured to generate laser beams respectively having different wavelengths;
• and
• a terahertz wave generating element configured to receive the laser beams having different wavelengths and generate a terahertz wave from the laser beams,
• wherein the plurality of fiber laser light sources include fiber laser light sources respectively including parameters that can be controlled independently, and the terahertz wave generating element includes a nonlinear optical crystal, said parameters being at least one of a pulse width, a repetition frequency and movements of the fiber laser light sources that emit the laser beams, and
• wherein the terahertz wave generation apparatus is configured to change an incident angle at which the laser beams enter the terahertz wave generating element by controlling the movements of the fiber laser light sources that emit the laser beams.