Patent ID: 8654801
Filing Date: 2014-02-18
Classification: G01D,G02B,G02F,H01S

Abstract:
1. A light source device, comprising: a laser light source; a wavelength conversion element, having a harmonic generation portion which generates a harmonic of laser light output from the laser light source, and a parametric oscillation portion which generates a signal light and an idler light from the harmonic generated by the harmonic generation portion; an intensity control portion, which is provided separately from the laser light source, and controls an intensity of the harmonic generated by the harmonic generation portion; a resonator, which causes resonance of the signal light output from the parametric oscillation portion; and a resonance control portion, which changes a resonance frequency of the resonator, wherein the resonator includes a FBG (Fiber Bragg Grating) which connects an input side and an output side of the wavelength conversion element, and the resonance control portion changes the resonance frequency of the resonator by applying stress to the FBG in a direction of extension of this FBG.