Abstract Magneto-optical glass is a category of optical materials. In this study, a series of Tb3+ doped Ga2O3–B2O3–SiO2–GeO2 (GBSG) glasses were prepared and studied. Through the density test, it was found that the structure of the magneto-optical glass tended to be dense. At the same time, the result of infrared spectrum shows that some changes happened to the structure of the sample with different Tb3 + concentration, resulting in the change of the density of the magneto-optical glass. The wavelength dependence of the Verdet constant has been studied. The results show that the rate of change of the Verdet constant at different wavelengths has nothing to do with the Tb3+ concentration, but only with the effective transition wavelength. The effective transition wavelength of the sample was calculated by the formula, and the source of the magneto-optical effect of the rare earth doped magneto-optical glass was confirmed.

中文翻译：

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Tb 3+ 掺杂磁光玻璃 Verdet 常数的波长相关性

摘要 磁光玻璃是一类光学材料。在这项研究中，制备并研究了一系列 Tb3+ 掺杂的 Ga2O3-B2O3-SiO2-GeO2 (GBSG) 玻璃。通过密度测试，发现磁光玻璃的结构趋于致密。同时，红外光谱结果表明，不同Tb3+浓度的样品结构发生了一些变化，导致磁光玻璃密度发生变化。已经研究了 Verdet 常数的波长依赖性。结果表明，不同波长下Verdet常数的变化率与Tb3+浓度无关，仅与有效跃迁波长有关。样品的有效跃迁波长由下式计算，