Journal of the European Optical Society - Rapid publications, Vol 9 (2014)

Double-sided split-step MM-wave Fresnel lenses: design, fabrication and focal field measurements

V. B. Yurchenko, M. Ciydem, M. Gradziel, J. A. Murphy, A. Altintas

Abstract


Design, fabrication and focal field measurements of W-band Fresnel lenses to produce well-shaped Gaussian beams in the focal domain are presented. Two lenses, one of Teflon and another of Polyamide, have been compared in their performance with a double-sided Fresnel lens of different design, with full height of Fresnel steps. Experiments show that a good focusing ability of all the lenses is achieved. They produce the target beam according to the design. Yet, the lenses of split-step design are thinner, have lower insertion losses, and a greater focal depth as compared to more conventional Fresnel lenses.

© The Authors. All rights reserved. [DOI: 10.2971/jeos.2014.14007]

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