The Quasi-phase-matching periodically poled flux-grown KTP by high electrical field method is researched. A 8X5X 1mm、, A=9.0|im PPKTP wafer is successfully fabricated for the first order QPM SHG. The interactive length of the sample is about 3mm. The
With calculation of phase match parameters and effective nonlinear coefficients, several different nonlinear optical processes using one biaxial crystal KTiOPO4 are considered. The nonlinear optical processes include (1) SHG (type II) of 1.064~0.532m
