Abstract
A novel transparent Pr3+, Ce3+ co-doped terbium gallium garnet (Pr,Ce:Tb3Ga5O12, Pr,Ce:TGG) single crystal was grown by the Czochralski technique. Its transmittance is about 80% in 600∼1300 nm wavelength range except for special absorption peaks. The Verdet constants (V) of Pr,Ce:TGG crystal at 532 nm and 632.8 nm are −230 and −153 rad T−1 m−1, which are both larger than those of terbium gallium garnet (Tb3Ga5O12, TGG) crystal. The thermal conductivity of Pr,Ce:TGG crystal is 3.35 W m−1 K−1 at 300 K. Bulk laser induced damage threshold (LIDT) of Pr,Ce:TGG crystal was measured to be 15 J cm−2 by R-on-1 test. The results show that Pr,Ce:TGG crystal as magneto-optical material has potential ability to be used in optical isolators.
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