报道了磷酸盐激光钕玻璃的连续熔炼线，以及采用连续熔炼工艺获得的400 mm 口径N31 钕玻璃的主要性能。连熔所制备的N31-35 钕玻璃的掺杂离子浓度为3.47(±0.02)×1020 cm-3；1053 nm 处的折射率为1.5336±0.0005；400 nm 处的吸收系数平均值为0.098 cm-1；1053 nm 处的激光波长损耗为0.13~0.15% cm-1；3000 cm-1 处的吸收系数平均值为0.83 cm-1。400 mm 口径连熔N31 钕玻璃的透射波前畸变在633 nm 处小于λ/3 波长。采用1053 nm、脉冲为3 ns激光作用下连熔钕玻璃的体破坏阈值大于40 J/cm2。结果表明，在N31 钕玻璃的连续熔炼工艺中，除铂金和除水都取得了很好的效果。

The continuous melting technology is reported. The 400 mm aperture N31 Nd:phosphate laser glass prepared from continuous melting technology is fabricated. The main properties of N31-35 glass have been disclosed. Its Nd3 + ion concentration is 3.47 (± 0.02)× 1020 cm-3. The refractive index at 1053 nm is 1.5336 ±0.0005. The absorption coefficients at 400 nm and 3000 cm-1, the laser wavelength loss at 1053 nm are 0.098 cm-1 and 0.83 cm-1, 0.13~0.15% cm-1, respectively. The PV value of transmitted wavefront is less than λ/3 at 633 nm. Its bulk damage threshold with 1053 nm, 3 ns pulse laser is larger than 40 J/cm2. The results indicate that the dehydration and platinum particle removing processes are very effective during the continuous melting.