Journal
OPTICS EXPRESS
Volume 22, Issue 21, Pages 25084-25092Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.025084
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Funding
- Russian Science Foundation [14-19-00796]
- Russian Science Foundation [14-19-00796] Funding Source: Russian Science Foundation
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Diffraction of a 3D optical beam on a multilayer phase-shifted Bragg grating (PSBG) is considered. It is shown that the PSBG enables optical computation of the spatial Laplace operator of the electromagnetic field components of the incident beam. The computation of the Laplacian is performed in reflection at normal incidence. As a special case, the parameters of the PSBG transforming the incident Gaussian beam into a Laguerre-Gaussian mode of order (1,0) are obtained. Presented numerical results demonstrate high quality of the Laplace operator computation and confirm the possibility of the formation of Laguerre-Gaussian mode. We expect the proposed applications to be useful for all-optical data processing. (C) 2014 Optical Society of America
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