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Lacunar fractal photon sieves |
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| Authors: | F. Gimé nez,J.A. Monsoriu |
| Affiliation: | a Departamento de Matemática Aplicada, Universidad Politécnica de Valencia, E-46022 Valencia, Spain b Departamento de Óptica, Universidad de Valencia, E-46100 Burjasstot (Valencia), Spain c Departamento de Física Aplicada, Universidad Politécnica de Valencia, E-46022 Valencia, Spain |
| Abstract: | We present a new family of diffractive lenses whose structure is based on the combination of two concepts: photon sieve and fractal zone plates with variable lacunarity. The focusing properties of different members of this family are examined. It is shown that the sieves provide a smoothing effect on the higher order foci of a conventional lacunar fractal zone plate. However, the characteristic self-similar axial response of the fractal zone plates is always preserved. |
| Keywords: | Diffractive lenses Photon sieves Fractals |
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