Near-field hexagonal array illumination based on fractional Talbot effect |
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Authors: | Weijuan Qu Liren Liu Dean Liu Yanan Zhi Wei Lu |
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Institution: | aShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, PR China |
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Abstract: | Hexagonal array is a basic structure widely exists in nature and adopted by optoelectronic device. A phase plate based on the fractional Talbot effect that converts a single expanded laser beam into a regular hexagonal array of uniformly illuminated apertures with virtually 100% efficiency is presented. The uniform hexagonal array illumination with a fill factor of 1/12 is demonstrated by the computer simulation. |
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Keywords: | Hexagonal array illumination Fractional Talbot effect Fill factor Phase plate |
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