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Appl Opt. 2011 Apr 10;50(11):1517-22. doi: 10.1364/AO.50.001517.

Efficiency-enhanced photon sieve using Gaussian/overlapping distribution of pinholes.

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1
Physics Department, Faculty of Sciences, Urmia University, Urmia, Iran. a.sabatyan@urmia.ac.ir

Abstract

A class of photon sieve is introduced whose structure is based on the overlapping pinholes in the innermost zones. This kind of distribution is produced by, for example, a particular form of Gaussian function. The focusing property of the proposed model was examined theoretically and experimentally. It is shown that under He-Ne laser and white light illumination, the focal spot size of this novel structure has considerably smaller FWHM than a photon sieve with randomly distributed pinholes and a Fresnel zone plate. In addition, secondary maxima have been suppressed effectively.

PMID:
21478923
[Indexed for MEDLINE]
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