Chen Zhe, Zhu Ling, Yi Jiyong, Yang Chao
Opt Lett. 2022 May 1;47(9):2270-2273. doi: 10.1364/OL.457086.
Magneto-optical materials based on TbGaO (TGG) crystals offer promising opportunities when used in modern Faraday isolators (FIs). Gadolinium (Gd)-doped TGG (Gd:TGG) crystals with high transmittance were prepared using the Czochralski (Cz) method. The as-prepared crystal presented a high optical transmittance of up to 80.0% in the range from 520 nm to 1520 nm. The Verdet constants of the as-grown crystal at 405.0, 533.0, 632.0, and 1064.0 nm were -583.0, -230.1, -150.3, and -50.3 rad m T, respectively. The measured value at 1064 nm was about 1.3 times stronger than that of TGG. Thus, it could minimize the strength of the magnet of Faraday rotators. These excellent characteristics make Gd:TGG single crystal an attractive magneto-optical material.
基于TbGaO（TGG）晶体的磁光材料在现代法拉第隔离器（FI）中使用时提供了广阔的机遇。采用提拉法（Cz法）制备了具有高透过率的钆（Gd）掺杂TGG（Gd：TGG）晶体。所制备的晶体在520 nm至1520 nm范围内呈现出高达80.0%的高光学透过率。生长态晶体在405.0、533.0、632.0和1064.0 nm处的费尔德常数分别为-583.0、-230.1、-150.3和-50.3 rad m T。在1064 nm处的测量值约为TGG的1.3倍。因此，它可以使法拉第旋转器的磁体强度最小化。这些优异的特性使Gd：TGG单晶成为一种有吸引力的磁光材料。
