磁光陶瓷的研究进展

IF 7.4 1区 物理与天体物理 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
A. Ikesue , Y.L. Aung , J. Wang
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引用次数: 4

摘要

磁光效应(法拉第效应)在19世纪中叶被发现。在20世纪下半叶,使用熔体生长法使用单晶(法拉第旋转器)的隔离器开始实际使用。在法拉第发现磁光效应一个世纪后,R.L.科布尔证明了多晶陶瓷的半透明性。陶瓷由于其多晶的微观结构,可能有许多散射源,即使从散射理论的角度来看,也被认为不可能将其应用于相干光(激光)的产生。然而,40年后,A. Ikesue首次证明了激光陶瓷的性能可与光学单晶相媲美。多晶陶瓷的激光应用的可能性也使得它有可能应用到法拉第旋转器(光隔离器),利用相干光。单晶取向构成的磁光单晶具有优异的光学性能和准确的法拉第旋转角,是磁光单晶的优势。然而,由随机晶体取向组成的多晶陶瓷不仅可以提供精确的法拉第旋转角,而且比单晶隔离器具有更高的消光比。开发了一种具有极低散射和极低插入损耗的陶瓷介质,这是单晶材料无法实现的。此外,新材料的Verdet常数比隔离器的主要商用晶体高几倍,使隔离器器件的尺寸减小成为可能。然而,这些材料不能通过传统的熔体生长方法合成。21世纪,多晶陶瓷是法拉第旋转元件的典范,即将进入由单晶向多晶陶瓷转变的时期。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Progress of magneto-optical ceramics

The magneto-optical effect (Faraday effect) was discovered in the middle of the 19th century. In the latter half of the 20th century, the practical use of isolators using single crystals (Faraday rotators) using the melt growth method began. One century after Faraday's discovery of the magneto-optic effect, R.L. Coble proved translucency of polycrystalline ceramics. Ceramics may have many scattering sources due to their polycrystalline microstructure, and even from the viewpoint of scattering theory, it was considered impossible to apply them to the generation of coherent light (laser). However, 40 years later, A. Ikesue demonstrated laser ceramics for the first time with performance comparable to that of optical single crystal counterparts. The possibility of laser application of polycrystalline ceramics also makes it possible to apply it to Faraday rotators (optical isolators) that utilize coherence light. A magneto-optical single crystal composed of a single crystal orientation was considered to be superior in that it provided excellent optical performance and an accurate Faraday rotation angle. However, polycrystalline ceramics composed of random crystal orientations can not only provide accurate Faraday rotation angle but can also have a higher extinction ratio than single crystal isolators. A ceramic medium with extremely low scattering and extremely low insertion loss, which cannot be achieved with a single crystal material, has been developed. In addition, new materials, which have Verdet constants several times higher than those of main commercial crystal for isolator, have made it possible to reduce the size of isolator devices. However, these materials cannot be synthesized by the conventional melt-growth method. In the 21st century, polycrystalline ceramics are paradigms for Faraday rotating elements, and are about to enter a period of change from single crystals to polycrystalline ceramics.

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来源期刊
Progress in Quantum Electronics
Progress in Quantum Electronics 工程技术-工程:电子与电气
CiteScore
18.50
自引率
0.00%
发文量
23
审稿时长
150 days
期刊介绍: Progress in Quantum Electronics, established in 1969, is an esteemed international review journal dedicated to sharing cutting-edge topics in quantum electronics and its applications. The journal disseminates papers covering theoretical and experimental aspects of contemporary research, including advances in physics, technology, and engineering relevant to quantum electronics. It also encourages interdisciplinary research, welcoming papers that contribute new knowledge in areas such as bio and nano-related work.
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