Patent ID: 7769060

Claim:
A laser light source comprising: a semiconductor laser for outputting pump light, and a laser resonator comprising a solid laser crystal and a non-linear optical crystal bonded to each other, and a first reflection layer and a second reflection layer located on opposite surfaces of the crystals, wherein the solid laser crystal is pumped by the pump light emitted from the semiconductor laser, and the non-linear optical crystal is for converting a wavelength of light emitted from the solid laser crystal, wherein the solid laser crystal comprises Gd x Y 1-x VO 4 wherein 0≦x≦1; the non-linear optical crystal comprises LiNbO 3 or LiTaO 3 ; a c axis which is a crystal axis of the solid laser crystal is inclined with respect to a z axis of the non-linear optical crystal within a z-x plane of the non-linear optical crystal, wherein the inclination of the c axis is within a range from 0.5° to 10°; a perpendicular line of the c axis is approximately parallel to an emission direction of a laser beam from the pump semiconductor laser; and the pump semiconductor laser emits green light of 300 mW or more, which is continuous light.