Angle tuned Signal resonated Optical Parametric Oscillator based on Periodically

We demonstrate an angle-tuned signal-resonated optical parametric oscillator (OPO) with periodically poled lithium niobate (PPLN) pumped by a diode-pumped Nd: YVO4 laser. 1499.8 - 1506.6 nm of signal wavelength is achieved at 140°C by rotating a 29-μm period PPLN from 0°- 10.22°in the x-y plane while keeping the pump wave vertical to the resonator mirrors. Two pairs of the signal and idler waves of the same wavelengths can be achieved symmetrically for each pair of angles of rotation with same ab