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Opt Lett. 1993 Nov 15;18(22):1893-5.

Apodized annular-aperture logarithmic axicon: smoothness and uniformity of intensity distributions.

Abstract

We show that the apodized annular-aperture logarithmic axicon preserves excellent uniformity of the on-axis intensity, energy flow, and lateral resolution. Numerical evaluation of the Fresnel diffraction integral leads to results very close to geometrical-optics predictions. Once again the geometrical law of energy conservation turns out to be a useful tool in designing axicons.

PMID:
19829438
[PubMed]
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