Study on Q modulation of longitudinal polarization electro-optical diffraction based on MgO: PPLN crystals

Abstract

Abstract We add electrodes to the upper and lower surfaces of periodically polarized lithium niobate, and load voltages at both ends of the electrodes. Without introducing additional devices, we construct an electro-optic Q modulation mode similar to the principle of acoustooptic Q modulation. The diffraction characteristics of light propagating along the x-axis of PPLN are simulated, and the diffraction characteristics of the incidence Angle in Prague and electro-optic diffraction Q of the load voltage are studied. On the basis of experiment research, the final 10 kHz in repetition frequency, the pulse width of 8.58 ns of the vertical polarization electric light diffraction tuning Q laser output, maximum peak power of 1486 W, the highest average power of 3.6 W.