Patent ID: 6301276
Filing Date: 2001-10-09
Classification: G02F,H01S

Abstract:
A laser light generating apparatus comprising:a first light source for radiating a first continuous laser light of a first wavelength;a second light source for radiating a second continuous laser light of a second wavelength different from said first wavelength;an optical resonator for allowing the first and second laser lights radiated by said first and second light sources to be oscillated in resonance simultaneously and mixed by additive frequency mixing for generating a third continuous laser light of a third wavelength, said resonator comprising a non-linear optical crystal element,wherein said resonator comprises an input coupling mirror on which said first and second laser lights are incident, wherein said input coupling mirror transmits light of said first and second wavelengths into said resonator, but reflects light of said first and second wavelengths within said resonator and transmits light of said third wavelength;a combining element that combines said first and second laser lights before inputting said first and second laser lights to said resonator;a first optical separator that is optically coupled to said resonator and that separates from the light output by said resonator a light component having said third wavelength;a second optical separator that separates light of said first wavelength and separates light of said second wavelength out of the light output by said resonator;a first light detector that detects said separated light of said first wavelength;a first controller that controls said first wavelength of said first light source by providing a frequency control signal to said first light source in response to said light detected by said first light detector;a second light detector that detects said separated light of said second wavelength; anda second controller that controls resonation by adjusting a length of an optical path in said resonator in response to said light detected by said second light detector.