高Verdet常数逆磁特性硫系玻璃的制备与性能研究

发布时间：2018-11-22 07:57

【摘要】：磁光玻璃具有特殊的磁致旋光效应在磁光隔离器、磁光开关、光纤通讯和光纤传感器等领域具有重要应用,而且磁光器件具有灵敏度高、抗干扰强、体积小、易于高度集成等特点而受到广泛关注。硫系玻璃因其红外透过波段较宽,具有逆磁特性,容易制备成光纤、光波导等优点而成为磁光材料的研究热点。本文采用熔融-淬冷方法制备了GeS_2-Ga_2S_3、GeS_2-Ga_2S_3-Pb I_2和GeS_2-Ga_2S_3-Sb(In)_2S_3系列玻璃。系统的研究了硫系玻璃的组成、结构、物理性能和光学性能与Verdet常数之间的关系。结果是具有大的s~2-sp跃迁的离子对Verdet常数贡献最高,并且随着高折射率的离子含量的增加,玻璃的Verdet常数随之增;通过贝克勒尔逆磁定理理论计算Verdet常数与实测值相比较得到在红外区域具有较好的重合度。在80Ge S_2-20Sb_2S_3玻璃具有最大值为0.184min·G~(-1)·cm~(-1)(@980nm)和最高的优值系数(FOM=11.22 min·G~(-1),@980 nm);通过优值系数FOM评价玻璃的实用性能得到在波长980nm处具有较好的实用性能;在不同温度下测试玻璃的Verdet常数得到结果是玻璃的Verdet常数与温度无关,和理论解释相一致。
[Abstract]:The magneto-optic glass has special magnetooptic effect, which has important applications in the fields of magneto-optic isolator, magneto-optic switch, optical fiber communication and optical fiber sensor, and the magneto-optic device has high sensitivity, strong anti-interference and small volume. It is easy to be highly integrated and has attracted wide attention. Sulfur glasses have become the research focus of magneto-optical materials due to their wide infrared transmission band, demagnetization characteristics, easy preparation of optical fiber, optical waveguide and other advantages. In this paper, GeS_2-Ga_2S_3,GeS_2-Ga_2S_3-Pb I _ 2 and GeS_2-Ga_2S_3-Sb (In) _ 2S_3 series glasses were prepared by melt-quenching method. The relationship between the composition, structure, physical and optical properties of sulfur glasses and the Verdet constant was systematically studied. The results show that the ions with large s~2-sp transition have the highest contribution to the Verdet constant, and the Verdet constant of the glass increases with the increase of the ion content of the high refractive index. Comparing the calculated Verdet constants with the measured values by the Beckler's inverse magnetic theorem, it is found that there is a good coincidence in the infrared region. In 80Ge S_2-20Sb_2S_3 glass, the maximum value is 0.184min G-1 cm~ (-1) (@ 980nm) and the highest coefficient of excellence (FOM=11.22 min G-1, @ 980 nm);). The practical properties of the glass were evaluated by FOM, and the Verdet constant of the glass was measured at different temperatures. The results showed that the Verdet constant of the glass was independent of the temperature, which was consistent with the theoretical explanation.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TQ171.1

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