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Unusual phenomena with self-organized nanogratings written in silica glass with a femtosecond laser.

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Abstract

Femtosecond laser written nanogratings show a random transition from self-organized to disordered structure and vice versa. A reason for the transition is proposed. Overlapping laser scans create nanogratings with apparent self-aligned fringes.

© 2014 Optical Society of America

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