Growth and magneto-optical properties of Ho-doped Tb3Sc2Al3O12 single crystal for faraday isolators

In this work, a novel Ho-doped Tb 3 Sc 2 Al 3 O 12 magneto-optical single crystal has been successfully grown by the Czochralski method for the first time. Phase composition of the crystal was tested by XRD measurements. The distribution coefficient of Ho 3+ in the crystal was obtained. The crystal exhibits excellent optical transmittance without inclusions. It shows a uniform elemental distribution and excellent magneto-optical properties. The Verdet constant is comparable to Tb 3 Sc 2 Al 3 O 12 crystal and higher than that of traditional Tb 3 Ga 5 O 12 crystal. Therefore, the Ho-doped Tb 3 Sc 2 Al 3 O 12 single crystal is a promising material for visible near-infrared Faraday applications.