Zinc doping is shown to reduce the photorefraction in LiNbO3:Zn. The damage-resistant crystal LiNbO3:Zn has demonstrated a conversion efficiency of approximately 50% for frequency doubling of 1.06-μm radiation. The dependence of optical characteristics on the ZnO concentration in the melt reveals a sharp change of the optical properties at the threshold concentration of 4–6 mol % Zn. The optical and nonlinear-optical data of LiNbO3:Zn are similar to those of LiNbO3:Mg, but the former shows better optical performance.
© 1990 Optical Society of America
Original Manuscript: October 26, 1989
Manuscript Accepted: June 18, 1990
Published: April 1, 1990
T. R. Volk, V. I. Pryalkin, and N. M. Rubinina, "Optical-damage-resistant LiNbO3:Zn crystal," Opt. Lett. 15, 996-998 (1990)