Journal
OPTICS LETTERS
Volume 33, Issue 21, Pages 2559-2561Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.33.002559
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Funding
- National Science Foundation of China (NSFC) [60525412]
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Dammann gratings, as beam splitters and coherent signal generators, were produced in a short fabricating cycle by femtosecond laser fabrication via two-photon photopolymerization. These holograms that each generated 2 X 2, 3 x 3, 4 X 4, 5 x 5, and 6 x 6 spot sources in the fan-out demonstrated diffraction efficiency of 36%, 25%, 29%, 52%, and 49%, respectively, comparable with the theoretical values. This work shows the promising prospect of femtosecond laser fabrication in compatibly manufacturing various micro-optical devices including Dammann gratings and their integrated systems. (C) 2008 Optical Society of America
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