Ultraviolet-visible optical isolators based on CeF3 Faraday rotator
Ultraviolet-visible optical isolators based on CeF3 Faraday rotator
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DOI：
10.1063/1.4922497
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发表时间：
2015-06
影响因子：
3.2
通讯作者：
E. Vı́llora;K. Shimamura;G. Plaza
中科院分区：
文献类型：
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作者：
E. Vı́llora;K. Shimamura;G. Plaza
第一个紫外（UV）和可见光隔离器的基础上CeF 3的演示。CeF 3作为紫外-可见光波段的法拉第旋光体具有独特的性能：宽的透明度范围（波长>300 nm）和出色的费尔德常数。相比之下，目前使用的铽镓石榴石和磁光玻璃在可见光和紫外线中分别具有低的透明度和小的费尔德常数。光隔离器原型由一个CeF 3棒、一个环形磁铁和几个分束器组成。环形磁体的设计保证了均匀的磁场;为此，进行了数值模拟。这两个原型非常紧凑，分别在355 nm的UV和405 nm的可见光下工作。这些器件的性能表明CeF 3作为一种新的紫外-可见法拉第旋转器的高潜力，特别是对于目前没有光学隔离器的较短波长。
The first ultraviolet (UV) and visible optical isolators based on CeF3 are demonstrated. CeF3 possesses unique properties as Faraday rotator for the UV-visible wavelength region: a wide transparency range (wavelength of >300 nm) and an outstanding Verdet constant. In contrast, currently used terbium-gallium garnets and magneto-optical glasses possess a low transparency in the visible and a small Verdet constant in the UV, respectively. The optical isolator prototypes consist of a CeF3 rod, a single ring magnet, and a couple of beam splitters. The ring magnets have been designed to guarantee a homogeneous magnetic field; for it, numerical simulations have been carried out. The two prototypes are very compact and operate in the UV at 355 and in the visible at 405 nm, respectively. The performance of these devices indicates the high potential of CeF3 as a new UV-visible Faraday rotator, specially for shorter wavelengths where at present there are no optical isolators available.