Pump and probe damage testing for investigation of transient material modifications associated with laser damage in optical materials

R. A. Negres, M. D. Feit, P. DeMange, J. D. Bude, S. G. Demos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

Laser-induced breakdown in the bulk of transparent dielectric materials is associated with the generation of extreme localized conditions of temperatures and pressures. In this work, we perform pump and probe damage testing experiments to investigate the evolution of transient absorption by the host material arising from modifications following confined laser energy deposition in fused silica and DKDP materials. Specifically, we measure the size of the damage sites observed in the region of spatial overlap between the pump and probe pulses versus probe time delay and energy. Results of this proof-of-principle experimental work confirm that material modifications under extreme conditions created during a damage event include transient optical absorption. In addition, we found that the relaxation times of the induced absorption are very distinct for DKDP and SiO2 even under identical excitation conditions, on the order of 100 ns and 100 μs, respectively.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume6720
DOIs
StatePublished - 2008
Externally publishedYes
Event39th Annual Symposium on Optical Materials for High-Power Lasers - Boulder, CO, United States
Duration: Sep 24 2007Sep 26 2007

Other

Other39th Annual Symposium on Optical Materials for High-Power Lasers
CountryUnited States
CityBoulder, CO
Period9/24/079/26/07

Keywords

  • Laser-induced material modifications
  • Localized energy deposition
  • Optical materials

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

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  • Cite this

    Negres, R. A., Feit, M. D., DeMange, P., Bude, J. D., & Demos, S. G. (2008). Pump and probe damage testing for investigation of transient material modifications associated with laser damage in optical materials. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 6720). [672019] https://doi.org/10.1117/12.750091