Welcome to Journal of Synthetic Crystals! Today is Share:

JOURNAL OF SYNTHETIC CRYSTALS ›› 2023, Vol. 52 ›› Issue (1): 8-16.

• Research Articles • Previous Articles     Next Articles

Preparation and Properties of Tb3AlxGa5-xO12 Magneto-Optical Crystal by Micro-Pulling-Down Method

LIU Wenjiao1, ZHANG Mingji1, XIN Xianhui1, HAO Yuankai1, FU Xiuwei1, ZHANG Jian1, JIA Zhitai1,2, TAO Xutang1   

  1. 1. State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, China;
    2. Shandong Research Institute of Industrial Technology, Jinan 250100, China
  • Received:2022-11-09 Online:2023-01-15 Published:2023-02-15

Abstract: Tb3Ga5O12 crystal is a mainstream commercial material with good magneto-optical performance, but it suffers from serious gallium oxide volatilization during the growth process, which makes it difficult to meet developing requirements in high power applications. Tb3Al5O12 crystal, which shows a large Verdet constant, is difficult to grow due to its incongruent melting nature. Therefore, it is urgent to explore new high-quality magneto-optical crystals to meet the needs in high power applications. In this work, a series of Tb3AlxGa5-xO12 (TAGG) magneto-optical crystals with high aluminum content were grown by the micro-pulling-down method in a mixed atmosphere of high-purity nitrogen and carbon dioxide. The result of the rocking curve shows the as-grown TAGG magneto-optical crystal has high crystal quality. The transmittance spectrum and magneto-optical characteristics test results show that, the TAGG crystal shows a higher transparency and a larger Verdet constant compared with the traditional Tb3Ga5O12 crystal, which is a very promising low-cost magneto-optical material for high power laser systems.

Key words: Tb3Ga5O12, TAGG, magneto-optical crystal, crystal growth, micro-pulling-down method, Tb3+-based garnet

CLC Number: