退火温度对铜纳米颗粒复合材料的三阶非线性光学性质的影响

Change of third-order nonlinear optical properties of copper nanoclusters with annealing temperature

采用离子注入法制备铜纳米颗粒复合材料,在波长为790 nm的入射激光作用下,运用Z-扫描技术测量了铜纳米颗粒复合材料的非线性光学折射率和非线性光学吸收系数,分析了退火温度对铜纳米颗粒复合材料光学性质的影响。结果表明,随着退火温度的升高,铜纳米颗粒复合材料的颗粒尺寸明显增大,且光学非线性折射率上升。通过改变非晶二氧化硅中铜纳米颗粒复合材料的形状,得到不同的三阶非线性光学系数的特定值。

Copper nanocluster composites prepared by Cu ion implantation were studied.Fast nonlinear optical refraction and nonlinear optical absorption coefficients were measured at 790 nm for Cu nanocluster composites by the Z-scan technique.With the increase of annealing temperature,the size of nanoclusters increased significantly,and optical nonlinearities was enhanced.Fuzzy data analysis indicates that by changing the ingredient configuration of metal nanoclusters in silica,different optical nonlinear properties can be selectively obtained.