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Optical Faraday rotator using Ce-substituted fibrous YIG single crystal grown by floating-zone method with YAG laser heating

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4 Author(s)
Sekijima, T. ; Ritsumeikan Univ., Kyoto, Japan ; Fujii, T. ; Wakino, K. ; Okada, M.

A new optical Faraday rotator using a fibrous Ce-substituted yttrium-iron-garnet (Ce:YIG) single crystal was developed. The fibrous Ce:YIG single crystal was successfully grown by the floating-zone method with infrared-assisted YAG laser heating at a fast growth rate. This crystal has a good quality and shows a better figure-of-merit for an optical Faraday rotator at wavelength λ=1.55 μm compared with commonly used Bi-substituted YIG films. Ce:YIG single crystals grown by our method are expected to reduce the cost of optical isolators

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 12 )