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Fresnel biprism as a 1D refractive axicon

Authors
Journal
Optik - International Journal for Light and Electron Optics
0030-4026
Publisher
Elsevier
Volume
124
Issue
21
Identifiers
DOI: 10.1016/j.ijleo.2013.03.126
Keywords
  • Fresnel Diffraction
  • Fresnel Biprism
  • Axicon

Abstract

Abstract Fresnel biprism is a one dimensional refractive element that has a lateral linear phase. Having been considered this element as a refractive axicon, its focal depth was evaluated theoretically and experimentally by means of Fresnel–Kirchhoff integral. It is shown that its focal length is a function of its refractive index and its apex angle. Experimental results are in very good agreement with theoretical work.

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