Diffraction of a plane, finite-radius wave by a spiral phase plate.
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.
Kotlyar
V V
VV
Image Processing Systems Institute, Russian Academy of Sciences, Samara State Aerospace University, Russia.
Khonina
S N
SN
Kovalev
A A
AA
Soifer
V A
VA
Elfstrom
H
H
Turunen
J
J