Study on optical property of Zn, Mg：LiNbO3 crystal

Zn,Mg:LiNbO3 crystal was grown by the pulling method from the melt and its composition,growth,optical homogeneity,photo-refraction resistance and frequency doubling were investigated.The grown crystal was 40mm in diameter and 70mm in length,the birefringence gradient of Zn,Mg:LiNbO3 crystal was less than 10-4/cm,the frequency doubling output pulse energy was 20mJ at 0.532μm and the conversation efficiency was 45%.This crystal was a new promising nonlinear optical material.