Effect of sulfate doping on optical properties of KDP crystal

Effects of sulfate doping on the growth and properties of KDP crystals were studied by “point seed”growth meth. The results show that this kind of impurity with low content sulfate anion has no obvious effect on the growth of KDP-type crystals. The structure of KDP crystals is little affected by this kind of impurity when the content of sulfate anion is 50×10－6．Optical properties comparison between the doped KDP crystal and the pure KDP crystal proves that sulfate doping has no evident effect on KDP’s transition, homogeneity but it decreases the laser damage threshold (LDT).