Interaction of laser pulse with confined plasma during exit surface nanosecond laser damage

Alexander M. Rubenchik, Michael D. Feit, Stavros G. Demos

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

3 Scopus citations

Abstract

Interpretation of spatial and time resolved images of rear surface ns laser damage in dielectrics requires understanding of the dynamic interaction of the incoming laser beam with the confined expanding plasma in the material. The detailed kinetics of the plasma, involving both expansion and retraction, depends on details of reflection and absorption in the hot material. The growth of the hot region is treated using a model previously developed to understand laser peening. The pressure is found to scale as the square root of laser intensity and drops off slowly after energy deposition is complete. For the conditions of our experimental observations in fused silica, our model predicts a pressure of about 9 GPa and a surface expansion velocity of about 1.5 km/sec, in good agreement with experimental observation.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume8885
ISBN (Print)9780819497536
DOIs
StatePublished - 2013
Externally publishedYes
Event45th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials: 2013 - Boulder, CO, United States
Duration: Sep 22 2013Sep 25 2013

Other

Other45th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials: 2013
CountryUnited States
CityBoulder, CO
Period9/22/139/25/13

Keywords

  • Laser ablation
  • Laser-induced breakdown
  • Laser-induced damage

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Interaction of laser pulse with confined plasma during exit surface nanosecond laser damage'. Together they form a unique fingerprint.

  • Cite this

    Rubenchik, A. M., Feit, M. D., & Demos, S. G. (2013). Interaction of laser pulse with confined plasma during exit surface nanosecond laser damage. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 8885). [88851D] SPIE. https://doi.org/10.1117/12.2030482