Structural modifications in fused silica due to laser-damage-induced shock compression

Alison Kubota; Maria-Jose Caturla; Lilian Davila; James Stolken; Babak Sadigh; A. Quong; Alexander M. Rubenchik; Michael D. Feit

doi:10.1117/12.461717

9 April 2002 Structural modifications in fused silica due to laser-damage-induced shock compression

Alison Kubota, Maria-Jose Caturla, Lilian Davila, James Stolken, Babak Sadigh, A. Quong, Alexander M. Rubenchik, Michael D. Feit

Author Affiliations +

Proceedings Volume 4679, Laser-Induced Damage in Optical Materials: 2001; (2002) https://doi.org/10.1117/12.461717
Event: Boulder Damage, 2001, Boulder, CO, United States

Abstract

High power laser pulses can produce damage in high quality fused silica optics that can lead to its eventual obscuration and failure. Current models suggest the initiation of a plasma detonation due to absorbing initiators and defects, leading to the formation of shock waves. Recent experiments have found a densified layer at the bottom of damage sites, as evidence of the laser-damage model. We have studied the propagation of shock waves through fused silica using molecular dynamics. These simulations show drastic modifications in the structure and topology of the network, in agreement with experimental observations.

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Alison Kubota, Maria-Jose Caturla, Lilian Davila, James Stolken, Babak Sadigh, A. Quong, Alexander M. Rubenchik, and Michael D. Feit "Structural modifications in fused silica due to laser-damage-induced shock compression", Proc. SPIE 4679, Laser-Induced Damage in Optical Materials: 2001, (9 April 2002); https://doi.org/10.1117/12.461717

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