Patent ID: 6654401
Filing Date: 2003-11-25
Classification: H01Q,H01S

Abstract:
A laser arrangement, comprising:a first solid-state laser formed on a chip, said first solid-state laser having a particular cavity length, at least a portion of said cavity of said first solid-state laser including electrooptic material; a second solid-state laser also formed on said chip, and having said particular cavity length, at least a portion of said cavity of said second solid-state laser including said electrooptic material; first and second optical pumps having nominally the same pump frequency; optical coupling means coupled to said first and second optical pumps and to said first and second solidstate lasers, for pumping said first and second lasers with similar pump light, whereby said first and second lasers produce first and second laser light beams; a light-to-electric converter which, in the presence of plural light signals at different frequencies or wavelengths, generates electrical signals at frequencies related to the difference; and second optical coupling means coupled to said first and second lasers, and coupled to said light-to-electric converter, for coupling said first and second laser light beams to said light-to-electric converter, whereby said light-to-electric converter generates at least one electrical difference signal.