对光限制器件的特性进行了简单的评述,并对由自散焦过程产生光限制的机理进行了分析。采用z扫描方法对有机材料分散红一的非线性折射过程和光限制特性进行了实验研究。对其结果进行了分析讨论,这种分析对于以自作用效应产生最佳光限制效应是十分有用的。 The properties of the light-limiting device are briefly reviewed, and the mechanism of light confinement caused by the self-defocusing process is analyzed. The z-scan method was used to investigate the nonlinear refraction process and the optical confinement characteristics of the red-emitting organic material. The results are analyzed and discussed, and such analysis is very useful for producing the best light confinement effect with self-acting effect.