Abstract

Permanent refractive index modifications (Δnmax = 2 × 10-3) were induced in clinical grade poly(methyl methacrylate) by UV femtosecond laser irradiation. Holographic writing realised 0.8 μ,m feature size, enabling gratings in polymer optical fibre and 3-D bulk structuring.

© 2006 Optical Society of America

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