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193nm photosensitivity in silica and local laser-induced femtosecond heating and cooling

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Abstract

We have used classical molecular dynamic simulations to model the long-lived structural effects of ultraviolet irradiation on amorphous silica. We present evidence that the observed densification arises as a result of the local melting generated by the radiation followed by rapid cooling. We examine physical factors that influence the sign and magnitude of this density change.

© 2003 Optical Society of America

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