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4. Photon screens and the antisymmetric phase grating
Some research teams have also proposed an original Fresnel lens, called a photon sieve, composed of a multitude of pinholes distributed over Fresnel zones . An example of a photon sieve is shown in figure 11 . The contributions of the individual pinholes interfere constructively overall, enabling a plane wave to be focused at a point smaller than the individual pinholes in the same way as a binarized Fresnel lens....
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Photon screens and the antisymmetric phase grating
Appendix: extending the notion of binary optics
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The study of binary optics is an old discipline and belongs to the toolbox of the researcher/engineer who can revisit these concepts according to his or her application needs. The bulk of current work in photolithography is in the field of nanotechnology and plasmonics, which are not covered in this article. The teams mentioned below have published papers that inspired this article, or their work is known to the authors. Nevertheless,...
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