光轴平行晶体表面时的锥光干涉图  

Interference pattern of convergent light for a uniaxial crystal with optical axis parallel to surface

作　　者：沈为民[1] 

机构地区：[1]中国计量学院光电信息工程系,浙江杭州310018

出　　处：《大学物理》2005年第6期3-6,46,共5页College Physics

基　　金：浙江省自然科学基金资助项目(102018)

摘　　要：针对光轴平行晶体表面时的锥光干涉图,提出了计算干涉场中振幅和相位分布的方法,据此绘制完整的干涉图,方便地显示出晶体参数改变时锥光干涉图的变化规律.用CCD摄像机拍摄了铌酸锂晶体的锥光干涉图,结果与理论完全一致.<Abstrcat>A calculation method about phase difference and amplitude in interference pattern of convergent light for a crystal with optical axis parallel to surface is proposed. The conoscopic interference patterns are simulated by digital image which can reveal the changes of the patterns with crystal parameters such as refractive index,thickness,orientation of optical axis.The experiment with a lithium niobate crystal is completed and the results show correctness of the method.

关 键 词：晶体光学 锥光干涉图 单轴晶体 CCD摄像机 

分 类 号：O436[机械工程—光学工程]