TRANSPARENT BAKED COMPACT, AND FARADAY ROTATOR AND OPTICAL ISOLATOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a baked compact excellent in transparency having a high transmittance even in the range of short wavelength of light, and a Faraday rotator and optical isolator using the baked compact.SOLUTION: A baked compact has a composition ratio represented by Ca(1-x)YbxF2+x, 0.4≤x≤1, and is excellent in transparency. The baked compact contains one or more kinds of element selected from Ce, Pr, Sm, Eu, and Y in the following composition ratio: Ca(1-x-y)YbxRyF2+x+y, 0.4≤x≤1.0, 0≤y≤0.5, where R indicates one or more kinds of element selected from Ce, Pr, Sm, Eu, and Y.