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Appl Opt. 2007 Sep 20;46(27):6719-26.

Cancellation of the zeroth order in a phase mask by mode interplay in a high index contrast binary grating.

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1
Laboratoire Hubert Curien UMR CNRS 5516 (formerly TSI), Jean Monnet University, 18, Rue B. Lauras, F-42000 Saint-Etienne, France.

Abstract

A new grating phase mask is designed that allows the cancellation of the zeroth transmitted order in a diffraction configuration where the grating period is smaller than twice the exposure wavelength. An analytical treatment based on the true-mode method delivers the structure parameters, achieving 100% interference contrast. This modal approach is used to describe the modal operation of the giant reflection to zero-order device.

PMID:
17882292
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