Abstract
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 language | English |
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| Article number | 953213 |
| Journal | Proceedings of SPIE, the International Society for Optical Engineering |
| Volume | 9532 |
| ISSN | 0277-786X |
| DOIs | |
| Publication status | Published - 10 Jul 2015 |
| Event | Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers - Jiading, Shanghai, China Duration: 17 May 2015 → 20 May 2015 |
Conference
| Conference | Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers |
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| Country/Territory | China |
| City | Jiading, Shanghai |
| Period | 17/05/2015 → 20/05/2015 |