摘要
在同成分LiNbO3中,掺入ZnO的摩尔分数分别为1%、3%、5%、7%和9%,掺入(质量分数)0.03%MnCO3和0.08%Fe2O3,采用提拉法生长了优质Zn∶Mn∶Fe∶LiNbO3晶体.测试Zn∶Mn∶Fe∶LiNbO3晶体的OH-红外吸收光谱,抗光损伤能力和位相共轭性能.Zn离子浓度在7%和9%时,OH-吸收峰移到3 528cm-1,讨论OH-吸收峰移动机理.随着Zn离子浓度增加,抗光损伤能力增加.Zn离子浓度增加到7%,达到阈值.Zn∶Mn∶Fe∶LiNbO3晶体抗光损伤能力比LiNbO3晶体高二个数量级,研究高掺锌Mn∶Fe∶LiNbO3晶体抗光损伤增强机理.随着Zn离子浓度增加,Zn∶Mn∶Fe∶LiNbO3晶体位相共轭反射率降低,位相共轭响应速度增加.Zn∶Mn∶Fe∶LiNbO3晶体位相共轭镜消除了光波的位相畸变.以Zn∶Mn∶Fe∶LiNbO3晶体作存储介质进行全息关联存储实验.讨论全息关联存储的工作原理.以原图象的25%和50%进行寻址,在输出平面上接收到较完整的存储图象.
Zn∶Mn∶Fe∶LiNbO3 crystals with 1%,3%,5%,7% and 9%,ZnO（in mole） and MnCO3 and Fe2O3,added at concentration of 0.03%and 0.08（in mass）respectively,were grown by Czochralski method from congruent LiNbO3 melting.The OH-infrared absorption spectra,the optical damage resistance and phase conjugate properties of Zn∶Mn∶Fe∶LiNbO3 crystals were tested.When Zn2＋ concentration reaches 7% and 9%,OH-absorption peaks shift to 3 528 cm-1.The mechanism of OH-1 absorption peaks shift were discussed.The optical damage resistance ability of Zn∶Mn∶Fe∶LiNbO3 crystals increase,with the increase of Zn2＋ concentration.When Zn2＋ concentration reaches to 7%（reaches threshold value）,the optical damage resistance ability are two orders of magnitude higher than that of LiNbO3 crystals.The enhancement mechanism of optical damage resistance of highly doping zinc Mn：Fe： LiNbO3 crystals was researched.The bhase conjugate reflectivity decreases and phase conjugate response speed increases,with the increase of Zn2＋ concentration.The phase conjugate mirror has eliminate optical wave phase distortion.The holographic associative storage experiment was carried out using Zn∶Mn∶Fe∶LiNbO3 crystals as storage medium.The working principle of holographic associative storage was discussed.Using 25% and 50% addressing,the intact storage image was received in output plane.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2011年第8期1276-1281,共6页
Acta Photonica Sinica
基金
国家自然科学基金(No.60777006)资助
