Abstract
High optical quality Tb3−xNdxGa5O12 (TNGG) single crystal has been grown by Czochralski technique. The absorption spectrum in the wavelength range of 300–1600 nm has been measured at room temperature, as well as the weak absorption at 1064 nm, and the spectral characteristics were analyzed in detailed. Results show a superior transparency in the near-infrared region. Thermal conductivity and laser induced damage threshold (LIDT) measurements were carried out to check its potential usage. Magnetic properties of the as-grown crystal were studied and showed paramagnetism. The magneto-optical properties were studied and the specific Faraday rotation of the as-grown crystal was measured at 1064 nm wavelength. The Verdet constant and magneto-optical figures of merit (V/α) calculated are 41 rad m−1 T−1 and 2.56 × 102 rad/T at 1064 nm, which are both larger than that of commercial TGG (2.44 × 102 rad/T). The results indicated that the TNGG shows a superior properties than that the commercial TGG and could be a promising candidate magneto-optical material in the wavelength of 900–1450 nm.
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