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. 2006 Jun 1;31(11):1597-9.
doi: 10.1364/ol.31.001597.

Diffraction of a plane, finite-radius wave by a spiral phase plate

V V Kotlyar  1 , S N Khonina, A A Kovalev, V A Soifer, H Elfstrom, J Turunen
Affiliations

Diffraction of a plane, finite-radius wave by a spiral phase plate

V V Kotlyar et al. Opt Lett. .

Abstract

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.

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