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Opt Lett. 1990 Mar 1;15(5):288-90.

Efficient array illuminator using binary-optics phase plates at fractional-Talbot planes.


We describe a phase plate based on the fractional-Talbot effect that converts a single expanded laser beam into a regular array of uniformly illuminated apertures with virtually 100% efficiency. The size, spacing, and fill factor of the illuminated aperture grid can be freely chosen to interface with a variety of electro-optic devices. A binaryoptics phase plate is demonstrated that converts uniform illumination into an array of square illumination cells with a fill factor of 1/16.


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