Patent ID: 8351108

Claim:
A wavelength conversion laser, comprising: an excitation light source for outputting excitation light; a solid state laser including a resonator; and a wavelength conversion element disposed in the resonator, wherein the solid state laser includes a first laser medium and a second laser medium as at least two types of laser media, the first laser medium oscillates a solid state laser beam of a first emission wavelength and the second laser medium oscillates a solid state laser beam of a second emission wavelength, wherein said at least two types of laser media are excited by the excitation light that is output from the common excitation light source, wherein the solid state laser includes two regions configured from the first laser medium, and the second laser medium is disposed between the two regions, wherein the excitation light enters one of the two regions configured from the first laser medium, then enters the second laser medium, and then enters the other of the two regions to be converted into the solid state laser beams of the first and second emission wavelengths in the resonator, and wherein the wavelength conversion element in the resonator converts the solid state laser beams of the first emission wavelength and the second emission wavelength into a second harmonic and a sum frequency of the first emission wavelength and the second emission wavelength, and simultaneously generates the second harmonic and the sum frequency.