Patent ID: 6282014
Filing Date: 2001-08-28
Classification: G02F

Abstract:
An optical parametric oscillator for down conversion of coherent light to longer wavelengths comprising:(a) an optical pump source for providing a pump beam at a primary wavelength;(b) a singly-resonant cavity having an input end and an output end;(c) a monolithic non-linear optical medium disposed in said cavity comprising at least two regions for sustaining optical parametric oscillation by producing an identical resonated signal frequency and a resultant idler frequency at each stage of the optical medium resulting in sequential gain of the resonated signal;(d) a reflective and transmissive input mirror, positioned at the input end of said cavity, for coupling the pump beam into the resonatant cavity and through the monolithic non-linear optical medium; and(e) a reflective and transmissive output mirror positioned at the output end of said cavity, adapted to couple the idler frequency external to the cavity, and further adapted to partially reflect and to oscillate the signal frequency within the resonatant cavity.