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用提拉法生长1%(摩尔分数,下同)In:Fe:LiNbO3(LN),2%In:Fe:LN,3%In:Fe:LN和Fe:LN晶体,配料中掺入0.03%(质量分数)Fe2O3。采用光斑畸变法测试晶体的光损伤阈值。结果表明:1%In:Fe:LN和2%In:Fe:LN晶体的光损伤阈值比Fe:LN晶体高1个数量级以上。3%In:Fe:LN晶体的光折变阈值比Fe:LN晶体高2个数量级以上。晶体的位相共轭效应测试结果表明,1%In:Fe:LN晶体的位相共轭反射率(R1=185%)高于3%In:Fe:LN晶体(R3=120%)。以3%In:Fe:LN晶体作为存储元件,1%In:Fe:LN晶体作为位相共轭镜,进行全息关联存储实验,其再现图像清晰完整,噪音小。
1% (molar fraction) In: Fe: LiNbO3 (LN), 2% In: Fe: LN, 3% In: Fe: LN and Fe: LN were grown by Czochralski method with 0.03% (Mass fraction) Fe2O3. Light damage threshold of crystal was measured by spot aberration method. The results show that the optical damage threshold of 1% In: Fe: LN and 2% In: Fe: LN crystals is more than one order of magnitude higher than that of Fe: LN crystals. The photorefractive threshold of 3% In: Fe: LN crystal is more than 2 orders of magnitude higher than that of Fe: LN crystal. The results of the phase conjugation test show that the phase conjugate reflectivity (R1 = 185%) of 1% In: Fe: LN crystal is higher than that of 3% In: Fe: LN crystal (R3 = 120%). The 3% In: Fe: LN crystal was used as the storage element and the 1% In: Fe: LN crystal as the phase conjugate mirror. The holographic correlation storage experiment was carried out, the reproduced image was clear and complete, and the noise was small.