| 简介 |
The problem addressed by the invention lies in providing a Faraday rotor, optical isolator and optical processing equipment having transmissivity greater than TGG, capable of being scaled up in size and having a high performance index at a wavelength in the visible wavelength region, in particular 400 nm or less. A Faraday rotor characterised in that it comprises as a main component a fluoride compound represented by the following general formula (1) or (2) : ＲＥ１Ｆ３－ｘ ・・・(１) ＬｉＲＥ２Ｆ４－ｘ・・・(２) where, in the above general formula (1) or (2), ０≦ｘ＜０．１ and RE1 and RE2 are at least one element selected from the group of rare earth elements. |
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