Kotlyar V V, Khonina S N, Kovalev A A, Soifer V A, Elfstrom H, Turunen J
Image Processing Systems Institute, Russian Academy of Sciences, Samara State Aerospace University, Russia.
Opt Lett. 2006 Jun 1;31(11):1597-9. doi: 10.1364/ol.31.001597.
We derive analytical expressions containing a hypergeometric function to describe the Fresnel and Fraunhofer diffraction of a plane wave of circular and ringlike cross section by a spiral phase plate (SPP) of an arbitrary integer order. Experimental diffraction patterns generated by an SPP fabricated in resist through direct e-beam writing are in good agreement with the theoretical intensity distribution.
我们推导了包含超几何函数的解析表达式，以描述具有任意整数阶的螺旋相位板（SPP）对圆形和环形横截面平面波的菲涅耳衍射和夫琅禾费衍射。通过直接电子束写入在光刻胶中制造的SPP产生的实验衍射图案与理论强度分布吻合良好。
