Associative storage properties of Zr：Fe：LiNbO3 crystals

In order to measure the infrared spectra,photo refractive threshold,phase conjugation and associative storage properties of Zr:Fe:LiNbO3 crystals,the crystals were firstly grown by means of the Czochralski technique.The experiment showed that the OH-vibrational peak corresponding to Zr:Fe:LiNbO3 crystal red-shifted to 3488cm-1.The optical damage resistance ability of Zr:Fe:LiNbO3 crystal was enhanced with the increase of Zr4+ion concentration.The optical damage resistance ability of Zr(mole fraction XZr=0.06):Fe:LiNbO3 crystal was one order magnitude higher than that of Fe:LiNbO3 crystal.With the increase of doping Zr4+ ions concentration,the response speed of phase conjugation of crystals was improved,and the reflection index of phase conjugation of crystals was weakly decreased,i.e.,the speed of Zr(xZr=0.02):Fe:LiNbO3 crystal was one order magnitude higher than that of Fe:LiNbO3 crystal.Otherwise,when Zr(xZr=0.04):Fe(mass fraction wFe=0.0003):LiNbO3 crystal was as the storage media and Zr(xZr=0.06):Fe(wFe=0.0003):LiNbO3 crystal was as phase conjugation mirror,the better quality storage image was received by the output plane.The above results show that Zr:Fe:LiNbO3 crystals have strong photorefractive damage ability and excellent associative storage properties.