飞秒激光作用下金掺杂硅酸盐玻璃的光致晶化研究

A study on the photo-induced crystallization properties in Au^+-doped silicate glasses

研究了金掺杂硅酸盐玻璃在飞秒激光辐照和热处理作用下的光致晶化行为 ,分析探讨了其机理和激光辐照条件的影响 .吸收光谱测试表明玻璃内部析出金纳米颗粒 .金纳米颗粒掺杂玻璃在近共振纳秒脉冲作用下显示了强的光限幅效应 。

We report the photo-induced crystallization behaviour of An(+)-doped silicate glasses fabricated by Ti: sapphire femtosecond pulsed laser and successive heat treatment. Absorption spectra showed gold nanoparticles precipitated near the focal point of the laser beam. We also demonstrate that the size distribution of nanoparticles can be controlled by the laser irradiation conditions. Gold nanoparticles-doped glasses reveal stronger optical limiting effects for nano-second laser pulses, and optical nonlinearities of the composite glass were also affected by laser irradiation conditions.