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铟钕掺杂钽酸锂单晶的生长及光学性能

Growth and Optical Properties of Lithium Tantalate Single Crystals Doped with Indium and Neodymium

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摘要

采用提拉法生长了双掺杂钕离子(Nd3+)和铟离子(In3+)的同成分LiTaO3单晶。测量了该单晶的紫外-可见光吸收光谱, 分析了该晶体的缺陷结构, 得到了铟离子的掺杂浓度阈值。当铟离子掺杂浓度达到该阈值时, In∶Nd∶LiTaO3晶体的抗光损伤能力显著增强。铟离子取代晶体中的反位TaLi4+, 使晶体光电导增大, 减弱了光折变效应。In∶Nd∶LiTaO3晶体在光波长0.808 μm处的吸收峰的半峰全宽为15 nm, 吸收截面为5.26×10-21 cm2。采用0.808 μm半导体激光作为抽运源, 钕离子在光波长1.06 μm处出现强烈的荧光带。这些研究结果表明, In∶Nd∶LiTaO3 作为多功能晶体可以应用于高功率的光子学或光电子学器件中。

Abstract

The congruent lithium tantalate (LiTaO3) single crystals doubly-doped with Nd3+ and In3+ ions are grown by the Czochralski method. The ultraviolet-visible absorption spectra of these single crystals are measured, the defect structures of these single crystals are analyzed, and the threshold of the doping concentration of In3+ ion is obtained. When the doping concentration of In3+ ion reaches this threshold, the optical damage resistance ability of In∶Nd∶LiTaO3 crystals enhances significantly. The replacement of the anti-site TaLi4+ by In3+ ions enhances the photo-conductivity of crystals and weakens the photorefractive effect. The full width at half maximum of the absorption peak of In∶Nd∶LiTaO3 crystals at the wavelength of 0.808 μm is 15 nm, and the absorption cross-section is 5.26×10-21 cm2. With a 0.808 μm semiconductor laser as the pumping source, a strong luminescence band of Nd3+ ions appears at the wavelength of 1.06 μm. These study results show that the In∶Nd∶LiTaO3 crystals can be applied in high power photonic or integrated optoelectronic devices as the multi-functional crystals.

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中图分类号:O734

DOI:10.3788/AOS201838.0116003

所属栏目:材料

基金项目:国家自然科学基金(61675095)

收稿日期:2017-07-17

修改稿日期:2017-09-12

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赫崇君:南京航空航天大学理学院, 江苏 南京 211106
李伟立:南京航空航天大学理学院, 江苏 南京 211106
王吉明:南京航空航天大学理学院, 江苏 南京 211106
顾晓蓉:南京航空航天大学理学院, 江苏 南京 211106
吴彤:南京航空航天大学理学院, 江苏 南京 211106
刘友文:南京航空航天大学理学院, 江苏 南京 211106

联系人作者:赫崇君(hechongjun@nuaa.edu.cn)

备注:赫崇君(1980-), 男, 博士, 副教授, 主要从事光学晶体方面的研究。E-mail: hechongjun@nuaa.edu.cn

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引用该论文

He Chongjun,Li Weili,Wang Jiming,Gu Xiaorong,Wu Tong,Liu Youwen. Growth and Optical Properties of Lithium Tantalate Single Crystals Doped with Indium and Neodymium[J]. Acta Optica Sinica, 2018, 38(1): 0116003

赫崇君,李伟立,王吉明,顾晓蓉,吴彤,刘友文. 铟钕掺杂钽酸锂单晶的生长及光学性能[J]. 光学学报, 2018, 38(1): 0116003

被引情况

【1】陈慧挺,赫崇君,李自强,高慧芳,冒蓉,刘登飞. 基于铈钆共掺杂YAG单晶荧光片的高光效白光LED. 人工晶体学报, 2020, 49(2): 205-209

【2】陈慧挺,赫崇君,李自强,高慧芳,冒蓉,刘登飞. 基于铈钆共掺杂YAG单晶荧光片的高光效白光LED. 人工晶体学报, 2020, 49(2): 205-209

【3】陈慧挺,赫崇君,李自强,高慧芳,冒蓉,朱俊. 四方相铌镁酸铅-钛酸铅单晶的声光特性研究. 人工晶体学报, 2020, 49(4): 587-591

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