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9 September 2009 Layered polymeric optical systems using continuous coextrusion
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Polymers are receiving considerable attention as components in novel optical systems because of the tailored functionality, ease of manufacturing, and relatively low cost. The processing of layered polymeric systems by coextrusion is a method to produce films comprising hundreds to thousands of alternating layers in a single, one-step roll-to-roll process. Several layered polymer optical systems have been fabricated by coextrusion, including gradient refractive index lenses, tunable refractive index elastomers, photonic crystals, and mechanically tunable photonic crystals. Layered polymeric optical systems made by coextrusion can also incorporate active components such as photoreactive additives for multilayered patterning and laser dyes for all-polymer laser systems. Coextrusion is a process which allows for the flexible design of polymeric optical systems using layers with thickness spanning the nanoscale to the microscale.
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Hyunmin Song, Kenneth Singer, Yeheng Wu, Juefei Zhou, Joe Lott, James Andrews, Anne Hiltner, Eric Baer, Christoph Weder, Robert Bunch, Richard Lepkowicz, and Guy Beadie "Layered polymeric optical systems using continuous coextrusion", Proc. SPIE 7467, Nanophotonics and Macrophotonics for Space Environments III, 74670A (9 September 2009);

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