In∶Ce∶Mn∶LiNbO_3晶体的全息存储性能(英文)  

HOLOGRAPHIC STORAGE PROPERTIES OF In : Ce: Mn: LiNbO_3 CRYSTALS

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作  者:杨春晖[1] 许艳波[1] 王锐[1] 徐玉恒[1] 

机构地区:[1]哈尔滨工业大学应用化学系,哈尔滨150001

出  处:《硅酸盐学报》2005年第8期939-941,共3页Journal of The Chinese Ceramic Society

基  金:国家自然科学基金(E50202005)资助项目;黑龙江省科技攻关项目。

摘  要:原料采用固液同成分配比,在LiNbO3(LN)晶体中掺入质量分数为0.1%CeO2和0.015%MnCO3,摩尔分数分别为0,1%,2%和3%的In,用提拉法生长In:Ce:Mn:LN晶体。测试了In:Ce:Mn:LN晶体的红外透射光谱和抗光损伤能力。结果表明:3%In:Ce:Mn:LN晶体的OH-振动吸收峰紫移到3508cm-1位置;其抗光损伤能力比Ce:Mn:LiNbO3晶体提高2个数量级以上。利用二波耦合光路测试晶体的写人时间(τw)、擦除时间(τe)和衍射效率(η),计算晶体的动态范围(M#),研究In3+掺量对Ce:Mn:LN晶体光折变性能的影响。结果表明:In:Ce:Mn:LN晶体是比Ce:Mn:LN晶体综合性能更好的全息存储材料。In: Ce: Mn : LiNbO3(LN) crystals with the addition of 0,1%,2%,or 3% In (in mole) were grown by the Czochralski method from congruent melting, with the CeO2 and MnCO3 contents of 0.1% and 0. 015% in mass respectively. The infrared spectra and the photo-damage resistance of the In : Ce : Mn : LN crystal were tested. The results show that the OH^- vibration absorption peak of the 3% In : Ce : Mn : LN crystal purple shifted to the 3 508 cm^-1 position; its photo-damage re- sistance is over two orders of magnitude higher than that of the Ce : Mn : LN crystal. The diffraction efficiency (η), writing time (τw) and erasure time (τc) were measured with a two-wave coupling experiment. The dynamic range (M^# ) was calculated for the first time. The effect of different In^3+ doping levels on the photorefractive properties of In : Ce : Mn = LiNbO3 crystals were investigated. The results show that the overall properties of the In : Ce : Mn : LN crystal make it a better holographic storage material than the Ce : Mn : LN crystal.

关 键 词: 铈和锰共掺杂钝酸锂晶体 提拉法晶体生长 全息存储 

分 类 号:O742.9[理学—晶体学]

 

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