光阑对非线性折射光限幅效果影响的理论研究  

Theoretical Analysis of the Effect of Aperture on Nonlinear-Refraction Optical Limiting

作　　者：张鹏[1] 牛燕雄[1] 马娜[1] 武东生[1] 

机构地区：[1]中国人民解放军军械工程学院光学与电子工程系,石家庄050003

出　　处：《光子学报》2007年第5期793-797,共5页Acta Photonica Sinica

摘　　要：分析和计算了光阑在两种典型光路系统的光限幅中对限幅效果的影响,包括光阑的大小和位置.两种典型系统分别为理想望远系统和理想聚焦系统.计算模型基于Z扫描理论及其改进公式,限幅机理为非线性折射.对每种情况下光阑的影响进行了定性分析和计算,并取得了相应的理论曲线.研究结果对于光限幅结构中光阑的选取和优化有重要的参考意义.The effect of aperture on optical limiting was analyzed and calculated in two typical optical-systems.The investigative parameters included aperture size and position.The optical systems were ideal telescopic system and ideal focusing system.The calculations were based on Z-scan theory and its modified formulas;the optical-limiting mechanism was nonlinear refraction.In each situation,the effect was analyzed qualitatively and the corresponding numerical curves were gained.This investigation is useful in optimizing and selecting aperture of optical limiters

关 键 词：光限幅 光阑 限幅效果 非线性折射 

分 类 号：O437[机械工程—光学工程]