A novel Tm3+-doped Tb3Al3Ga2O12 magneto-optic crystal for Faraday isolators

Xianhui Xin; Yuankai Hao; Xianxian Yang; Zhen Zhang; Chunquan Li; Hongyang Zhao; Na Lin; Xiuwei Fu; Zhitai Jia

doi:10.1039/D4CE01300J

A novel Tm³⁺-doped Tb₃Al₃Ga₂O₁₂ magneto-optic crystal for Faraday isolators†

Xianhui Xin,^a Yuankai Hao,^a Xianxian Yang,^a Zhen Zhang,^a Chunquan Li,^a Hongyang Zhao,

^b Na Lin,

*^a Xiuwei Fu

*^a and Zhitai Jia

^ac

Author affiliations

* Corresponding authors

^a State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, China
E-mail: linna@sdu.edu.cn, fxw@sdu.edu.cn

^b Hubei Key Laboratory of Plasma Chemistry and Advanced Materials, Wuhan Institute of Technology, Wuhan 430205, China

^c Shandong Research Institute of Industrial Technology, Jinan, Shandong 250100, China

Abstract

The demand for Faraday isolators in high-power lasers has driven the development of high-performance magneto-optical crystals in the visible near-infrared region. Herein, a new magneto-optical crystal, 1% Tm³⁺-doped Tb₃Al₃Ga₂O₁₂ (Tm: TAGG), was synthesized by the Czochralski (Cz) method for the first time. The crystal has no cracking and inclusions, and its phase purity was confirmed by powder X-ray diffraction. Transmission spectra suggest that Tm: TAGG possesses a wide transparency region and high transmittance (more than 80%) in addition to the characteristic absorption peak in the visible near-infrared (VIS-NIR) region. Laue back-reflection measurement results demonstrate the high crystalline quality of the Tm: TAGG crystal. The segregation coefficient of Tm³⁺ was obtained by X-ray fluorescence analysis (XRF). The Verdet constant of Tm: TAGG is close to that of TAGG, which is about 1.33 times that of TGG at 1064 nm. Therefore, Tm: TAGG has great potential for application as a Faraday isolator.

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Article information

DOI: https://doi.org/10.1039/D4CE01300J
Article type: Paper
Submitted: 24 Dec 2024
Accepted: 19 Jan 2025
First published: 20 Jan 2025

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CrystEngComm, 2025, Advance Article

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A novel Tm³⁺-doped Tb₃Al₃Ga₂O₁₂ magneto-optic crystal for Faraday isolators

X. Xin, Y. Hao, X. Yang, Z. Zhang, C. Li, H. Zhao, N. Lin, X. Fu and Z. Jia, CrystEngComm, 2025, Advance Article , DOI: 10.1039/D4CE01300J

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