Abstract The crystallization behavior of 25Na2O–50WO3–25TeO2 glass was examined to develop transparent glass-ceramics containing nonlinear optical Na2TeW2O9 crystals. It was clarified from XRD analysis and Raman scattering spectra that a metastable crystalline phase is formed initially and the stable crystalline phase of Na2TeW2O9 is created through the transformation of the metastable phase. Laser irradiations (continuous wave Yb:YVO4 fiber laser, wavelength of 1080 nm) with the condition of the laser power of P = 0.55 W and scanning speed of S = 2.3 μm/s created the patterning of homogeneous crystals lines. The crystalline phase in the laser irradiated part was proposed to be the metastable crystalline phase from micro-Raman scattering spectra.

中文翻译：

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钨-碲酸盐玻璃中非线性光学 Na 2 TeW 2 O 9 晶体的形成和激光照射

摘要 研究了 25Na2O–50WO3–25TeO2 玻璃的结晶行为，以开发含有非线性光学 Na2TeW2O9 晶体的透明微晶玻璃。XRD 分析和拉曼散射光谱表明，最初形成了亚稳晶相，并通过亚稳相的转变产生了稳定的 Na2TeW2O9 晶相。在激光功率为 P = 0.55 W 和扫描速度为 S = 2.3 μm/s 的条件下，激光照射（连续波 Yb:YVO4 光纤激光器，波长为 1080 nm）创建了均匀晶体线的图案。根据微拉曼散射光谱，激光照射部分的晶相被认为是亚稳晶相。