人工晶体学报2026，Vol.55Issue(9)：1357-1362,6.DOI:10.16553/j.cnki.issn1000-985x.2026.0114
TSAG晶体的生长及性能研究
Growth and Properties of TSAG Crystal
摘要
Abstract
Terbium scandium aluminum garnet(Tb3Sc2Al3O12,TSAG)crystal is a novel magneto-optic crystal with outstanding magneto-optical properties,which holds great promise for wide applications in high-power lasers.However,the high stress and susceptibility of TSAG crystal to cracking restrict the processing and practical utilization of corresponding optical components.To improve the crystal quality,this paper focused on the high stress problem in TSAG crystal and systematically investigated the composition distribution along the crystal growth direction and radial direction.By optimizing the crystal growth process,the composition uniformity of TSAG crystal was effectively enhanced,and φ45 mm×100 mm low-stress TSAG crystal was successfully grown.The fabricated TSAG crystal component exhibits an absorption loss coefficient of 0.19％/cm,and the developed isolator with a 3 mm clear aperture achieves a minimum isolation of 36.19 dB.The magneto-optical properties of TSAG crystals in different directions are further studied in detail.The crystal in the[100]direction possesses the maximum Verdet constant(51.38 rad·m-1·T-1),which is beneficial for the miniaturization of isolators.The research results demonstrate that the successful development of low-stress TSAG crystal is expected to realize the application of TSAG crystal in high-power laser system.关键词
磁光晶体/TSAG晶体/晶体生长/组分分布/隔离器件/磁光性能Key words
magneto-optical crystal/TSAG crystal/crystal growth/composition distribution/isolation device/magneto-optical property分类
数理科学引用本文复制引用
窦仁勤,杨明亮,王小飞,王新宇,刘文鹏,高进云,罗建乔,张庆礼..TSAG晶体的生长及性能研究[J].人工晶体学报,2026,55(9):1357-1362,6.基金项目
国家重点研发计划(2023YFB3507403) （2023YFB3507403）
