OPTICAL PARAMETRIC OSCILLATOR Russian patent published in 2001 - IPC

FIELD: laser technology, nonlinear optics, scientific research. SUBSTANCE: optical parametric oscillator composed of resonator and nonlinear crystal is inserted with element that inputs pumping radiation manufactured in the form of Brewster plate and mounted on optical axis of resonator between one of mirrors and nonlinear crystal. In this case working surfaces of nonlinear crystal are oriented at angle of synchronism with axis of resonator. Mirrors of resonator are made of metal. EFFECT: diminished generation threshold, enhanced energy efficiency, expanded range of re-adjustment of optical parametric oscillator. 2 cl, 1 dwg