Patent ID: 6738397
Filing Date: 2004-05-18
Classification: G02F

Abstract:
A solid-state light source apparatus, comprising:a first excitation laser light source for outputting a laser beam of a first wavelength; a second excitation laser light source for outputting a laser beam of a second wavelength, a difference frequency between the laser beam of the first wavelength and the laser beam of the second wavelength being in a terahertz band; and a nonlinear wavelength conversion device having a plurality of semiconductor materials united with each other by diffused junction, the nonlinear wavelength conversion device disposed at a place where a first optical axis of the laser beam of the first wavelength overlaps with a second optical axis of the laser beam of the second wavelength, and generates a terahertz beam in a direction coaxial with the first and second optical axes on the basis of irradiation of the laser beams of the first and second wavelengths.