Sulfonated polystyrene as a new gradient-index medium for light-focusing elements

Abstract

We have discovered that the sulfonation of polystyrene can form a gradient-index medium useful for light-focusing purposes. We found that the refractive index of sulfonated polystyrene varies with the degree of sulfonation and that the refractive index of the fully sulfonated polystyrene decreased by approximately 0.06 at 0.633 μm from that of pure polystyrene.

© 1995 Optical Society of America

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