Growth and characterization of Nd:Bi₁₂SiO₂₀ single crystal

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• 作者：Honghao Xu ; Yuanyuan Zhang ; Huaijin Zhang ; Haohai Yu ; Zhongben Pan ; Yicheng Wang ; Shangqian Sun ; Jiyang Wang ; R.I. Boughton
• 关键词：Nd ; Bi12SiO20 crystal ; Thermal properties ; Optical spectra ; Laser diode pumped
• 刊名：Optics Communications
• 出版年：2012
• 出版时间：1 September, 2012
• 年：2012
• 卷：285
• 期：19
• 页码：3961-3966
• 全文大小：821 K

文摘

A Nd:Bi₁₂SiO₂₀ crystal was grown by the Czochralski method. The thermal properties of the crystal were systematically studied. The thermal expansion coefficient was measured to be ¦Á=11.42¡Á10^?6 K^?1 over the temperature range of 295-775 K, and the specific heat and thermal diffusion coefficient were measured to be 0.243 Jg^?1 k^?1 and 0.584 mm²/s, respectively at 302 K. The density was measured to be 9.361 g/cm³ by the buoyancy method. The thermal conductivity of Nd:Bi₁₂SiO₂₀ was calculated to be 1.328 Wm^?1 K^?1 at room temperature (302 K). The refractive index of Nd:Bi₁₂SiO₂₀ was measured at room temperature at eight different wavelengths. The absorption and emission spectra were also measured at room temperature. Continuous-wave (CW) laser output of a Nd:Bi₁₂SiO₂₀ crystal pumped by a laser diode (LD) at 1071.5 nm was achieved with an output power of 65 mW. To our knowledge, this is the first time LD pumped laser output in this crystal has been obtained. These results show that Nd:Bi₁₂SiO₂₀ can serve as a laser crystal.