Effective Faraday rotator based on the TbYO3 crystal with a high Verdet constant and a high thermal conductivity

Facing the demand of high-power laser development, a high -quality magneto-optical crystal with a high Verdet constant and a high thermal conductivity is needed. Herein, an effec-tive Faraday rotation based on a TbYO3 single crystal with a strong magneto-optical effect, grown by the laser float-ing zone method, is demonstrated for the first time, to the best of our knowledge. The TbYO3 crystal has the Verdet constant which is 2.16 times (106 rad center dot m-1 T-1) higher than that of the TGG crystal (49 rad center dot m-1 T-1) at 880 nm. Addi-tionally, the TbYO3 crystal also has a thermal conductivity of 11.8 W center dot m-1 center dot K-1 and a laser-induced damage threshold of 1.59 GW center dot cm-2. These advantages can allow the TbYO3 crys-tal to be an attractive magneto-optical material. (c) 2023 Optica Publishing Group