Vortex characteristics of Fraunhofer diffractions of a plane wave by a spiral phase plate limited by pseudoring polygonal apertures

Optics Letters
Huiqin TangKaicheng Zhu

Abstract

We introduce a multilevel spiral phase plate (SPP) limited by a pseudoring polygonal aperture (PRPA). Such an SPP has the advantages of easier fabrication and greater suppression of the sidelobes of the diffraction field over that generated with a polygonal aperture (PA). The Fraunhofer diffraction fields generated by an SPP with a PRPA or with a PA have the same topological charge features and a similar diffraction pattern. Numerical evaluations show that the maximum bright annular-intensity difference between the diffraction patterns for the SPP with a PRPA and that of a PA does not exceed 3% under optimal design parameters.

References

Nov 11, 2005·Optics Letters·Grover A Swartzlander
Apr 28, 2006·Optics Letters·Cheng-Shan GuoJianping Ding
May 12, 2006·Optics Letters·J LinR E Burge
May 23, 2006·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Alexander JesacherMonika Ritsch-Marte
Jun 14, 2006·Optics Letters·Grover A Swartzlander
Aug 17, 2006·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Rajesh Menon, Henry I Smith
Nov 17, 2007·Optics Letters·G S Agarwal, J Banerji
Nov 23, 2007·Optics Letters·Andrew G PeeleIan McNulty
Jan 17, 2008·Optics Letters·Victor V Kotlyar, Alexey A Kovalev

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