【摘要】 本文在理论上计算了超短激光脉冲经过光学部件的展宽效应并实际给出了一种基于镀铝反射镜的小色散 Z-扫描测量系统 ,同时也对实验中的其他重要参数进行了讨论。对该系统在材料高阶非线性光学特性测量中的应用进行了研究 ,实验显示测量曲线与理论拟合曲线吻合较好 ,所求得非线性参数值与报道值也较吻合。最后给出了对一种具有较大三阶非线性光学特性的新型发光材料的测试结果更多还原

【Abstract】 The broadening effect of ultrashort laser pulse due to optical components is theoretically calculated and a Z scan system with small internal dispersion based on Al coated mirrors is reported.Some key parameters in this system are also discussed.The experiments on measuring high order optical nonlinearities of materials are presented,the results give good Z scan curve,and are in good agreement with reported value.Finally,a new luminous material of large third order nonlinearity is studied with this improved system.更多还原