两种无机巢形金属团簇的非线性吸收及光限幅特性研究

Study on Nonlinear Absorptions and Optical Limiting Properties of Two Inorganic Nest-shaped Metallic Clusters

用 5 32nm ,8ns激光脉冲系统研究了两种巢形金属团簇非线性吸收和光限幅特性。Z 扫描和光限幅的实验结果表明 ,团簇的非线性吸收和光限幅特性强烈依赖于重金属原子。

The nonlinear absorptions and optical limiting properties of two nest-shaped metallic clusters were investigated with 532 rim, 8 ns duration laser pulses. Z-scan and optical limiting experimental results indicate that the nonlinear absorptions and optical limiting properties of two clusters depend critically on the heavy metallic atoms in the two clusters. The effective excited-state absorption cross sections were calculated according to effective excited-state absorption theory. The optical limiting mechanisms were analyzed.