高斯光束经圆波片后的衍射  

Diffraction of a Gaussian Beam Passing through a Circular Phase-plate

作　　者：盛正卯[1] 杨焕雄[1] 

机构地区：[1]杭州大学物理系,杭州310028

出　　处：《中国激光》1998年第5期457-461,共5页Chinese Journal of Lasers

基　　金：国家教委留学回国人员基金;浙江省自然科学基金资助项目

摘　　要：模拟腔外式新光束激光器并基于线性衍射理论得到经各种圆波片衍射后,其光轴上的光强分布。发现加带位相差的圆波片衍射后,轴上光强可在很宽的范围内得到加强,但其无穷远处的发散角将增大。The analytical expression for the diffraction distribution on the axis of a Gaussian beam through a circular phase- plate is obtained. It is found that the intensity of the diffracted light is larger than that of the free Gaussian beam in a wide range, but the intensity in the infinite far field is less than that of the free Gaussian beam.

关 键 词：新光束激光器 圆波片 衍射 激光器 

分 类 号：TN243[电子电信—物理电子学]