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Proceedings Paper

First experimental demonstration of a Fresnel axicon
Author(s): Kevin Gourley; Ilya Golub; Brahim Chebbi
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Paper Abstract

Nondiffracting or Bessel beams find applications in diverse fields like optical tweezers/spanners, microscopy, super-resolution and optical coherence tomography. An axicon, energywise, is the most efficient method for generating a diffraction-free beam. Yet one of the impediments to wide use of these optical elements is the cost related to the way they are manufactured. Recently we proposed a novel optical element - Fresnel axicon (Opt. Lett. 31, 1890, 2006) - which enables to overcome this problem while providing advantages such as compactness and very low bulk absorption. Prototypes of the Fresnel axicon were manufactured. In the present work we report the first experimental results characterising the optical properties of this novel device, which bridges the gap between diffractive axicons and their refractive counterparts.

Paper Details

Date Published: 11 August 2008
PDF: 7 pages
Proc. SPIE 7099, Photonics North 2008, 70990D (11 August 2008); doi: 10.1117/12.807162
Show Author Affiliations
Kevin Gourley, Algonquin College (Canada)
Ilya Golub, Algonquin College (Canada)
Brahim Chebbi, Algonquin College (Canada)


Published in SPIE Proceedings Vol. 7099:
Photonics North 2008

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