Ultrashort-pulse laser excitation and damage of dielectric materials: Experiments and modeling

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Ultrashort-pulse laser excitation of dielectrics is an intricate problem due to the strong coupling between the rapidly changing material properties and the light. In the present paper, details of a model based on a multiple-rate-equation description of the conduction band are provided. The model is verified by comparison with recent experimental measurements of the transient optical properties in combination with ablation-depth determinations. The excitation process from the first creation of conduction-band electrons at low intensities to the formation of a highly-excited plasma and associated material fragmentation is explained by the model. For quartz samples, the optical properties are strongly influenced by self-trapped excitons, and the associated additions to the model are described.
Original languageEnglish
Article number953213
JournalProceedings of SPIE, the International Society for Optical Engineering
Volume9532
ISSN0277-786X
DOIs
Publication statusPublished - 10 Jul 2015
EventPacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers - Jiading, Shanghai, China
Duration: 17 May 201520 May 2015

Conference

ConferencePacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers
CountryChina
CityJiading, Shanghai
Period17/05/201520/05/2015

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