Abstract

Magneto-optical characteristics of a new magneto-active material, ${({\mathrm{Tb}}_{(1-x)}{\mathrm{Ho}}_x)}_3{\mathrm{Ga}}_5{\mathrm{O}}_{12}$ crystal, have been grown by the Czochralski (Cz) method. A high value of the Verdet constant was obtained at room temperature—namely, 214.9 and $77.8\mathrm{rad}·{\mathrm{m}}^{-1}{\mathrm{T}}^{-1}$ for 632.8 and 1064 nm, respectively. The Verdet constant of the Ho-doped terbium gallium garnet crystal at 1064 nm is about 2 times higher than that of terbium gallium garnet crystal. High value of magneto-optical figure-of-merit makes it an attractive next-generation magneto-optics material for high-power Faraday isolators.

© 2016 Optical Society of America

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