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人工晶体学报 ›› 2025, Vol. 54 ›› Issue (10): 1696-1713.DOI: 10.16553/j.cnki.issn1000-985x.2025.0146

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磁光晶体及器件研究进展

陈伟(), 王城强, 陈养国, 章睿, 党羽, 陈江旭, 陈秋华, 张星()   

  1. 福建福晶科技股份有限公司,福州 350003
  • 收稿日期:2025-07-14 出版日期:2025-10-20 发布日期:2025-11-11
  • 通信作者: 张星,硕士,高级工程师。E-mail:freeman.zhang@castech.com
  • 作者简介:陈伟(1977—),男,福建省人,硕士,高级工程师。E-mail:chenwei@castech.com
    张 星,高级工程师,现任福建福晶科技股份有限公司总经理助理,兼任全国人工晶体标准化技术委员会委员、中国材料与试验团体标准委员会建筑材料领域委员会人工晶体技术委员会委员。主要从事新材料探索、性能改善、制备技术和批量生产工程化研究。主持或参与国家发展改革委重大专项、国家重点研发计划等省部级项目6项,开发了一系列应用于超快激光的核心晶体和光学元器件;发表SCI及核心期刊论文20余篇;申请专利142项,已授权专利68项,其中发明专利6项。

Research Progress of Magneto-Optical Crystals and Devices

CHEN Wei(), WANG Chengqiang, CHEN Yangguo, ZHANG Rui, DANG Yu, CHEN Jiangxu, CHEN Qiuhua, ZHANG Xing()   

  1. CASTECH INC,Fuzhou 350003,China
  • Received:2025-07-14 Online:2025-10-20 Published:2025-11-11

摘要: 磁光隔离器作为激光系统中的关键器件,核心功能依赖于磁光晶体的法拉第效应,能够有效隔离反射光,提升激光系统的稳定性。本文综述了磁光材料的发展历程,重点介绍了稀土石榴石晶体(如TGG、TAG、TSAG、YIG)和氟化物晶体(如CeF3、KTb3F10)的磁光性能、生长技术及应用现状。TGG晶体是目前应用最广泛的磁光材料,但其磁光性能在高功率激光器中逐渐面临瓶颈;TAG和TSAG晶体性能更优,Verdet常数要高于TGG晶体30%以上,但生长难度较大;YIG晶体在中远红外波段表现优异,在1 064 nm处的Verdet常数可达-515.82 rad/(T·m),但尺寸限制仍需突破。氟化物晶体(如CeF3和KTF)凭借高透过率和低光学吸收成为新兴研究方向,尤其在紫外和可见光波段潜力显著,在紫外波段透过率能达到85%。此外,本文探讨了磁光隔离器的工作原理、发展历程及研究进展,并展望了未来高性能磁光材料及器件的应用前景。

关键词: 磁光晶体; 磁光效应; 石榴石晶体; 氟化物晶体; 磁光隔离器

Abstract: As a key component in laser systems, the core function of magneto-optical isolators relies on the Faraday effect of magneto-optical crystals, which can effectively isolate reflected light and improve the stability of laser systems. This article reviews the development history of magneto-optical materials, focusing on the magneto-optical properties, growth techniques, and application status of rare earth garnet crystals (such as TGG, TAG, TSAG, YIG) and fluoride crystals (such as CeF3, KTb3F10). TGG crystal is currently the most widely used magneto-optical material, but its magneto-optical performance is gradually facing bottlenecks in high-power lasers; TAG and TSAG crystals have better performance, with a Verdet constant more than 30% higher than that of TGG crystal, but they are more difficult to grow; YIG crystal exhibits excellent performance in the mid to far infrared range, with the Verdet constant reaching -515.82 rad/(T·m) at 1 064 nm, but size limitations still need to be overcome. Fluoride crystals (such as CeF3 and KTF) have emerged as a promising research field due to their high transmittance and low optical absorption. They show great potential, particularly in the ultraviolet (UV) and visible spectral bands, achieving transmittance rates of up to 85% in the UV region. In addition, this article explores the working principle, development history, and research progress of magneto-optical isolators, and looks forward to the application prospects of high-performance magneto-optical materials and devices in the future.

Key words: magneto-optical crystal; magneto-optical effect; garnet crystal; fluoride crystal; magneto-optical isolator

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