Understanding the physical and material dynamics of multipulse femtosecond laser interactions with surfaces

Troy P. Anderson, Craig Zuhlke, Chris Wilson, Corey Kruse, Natale Ianno, Sidy Ndao, George Gogos, Dennis Alexander

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

1 Scopus citations

Abstract

We describe the evolution of laser damage spots on bulk nickel generated by multipulse femtosecond laser irradiation with a 100 μm x 100 μm square flat-top beam profile as a function of the laser fluence and the number of pulses incident on the target. This large-area irradiation simulates conditions associated with the interaction of femtosecond laser pulses on a remote target. The larger area laser damage sites are characterized either by a series of self-organized surface structures with micro- and nanoscale features or a deep circular pit rather than a crater that mirrors the beam profile. Furthermore, the ablation rate of the deepest feature sharply increases above a laser fluence of 2 J/cm2; this increase is associated with the creation of a deep circular ablation pit generated during ablation with the first few pulses on the sample that continuously grows upon multipulse irradiation due to the focusing of incident laser energy into the pit by the sloped pit surfaces.

Original languageEnglish (US)
Title of host publication45th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials
Subtitle of host publication2013
PublisherSPIE
ISBN (Print)9780819497536
DOIs
StatePublished - 2013
Event45th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials: 2013 - Boulder, CO, United States
Duration: Sep 22 2013Sep 25 2013

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8885
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference45th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials: 2013
CountryUnited States
CityBoulder, CO
Period9/22/139/25/13

Keywords

  • Femtosecond Laser Ablation
  • Multipulse Ablation
  • Nickel

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Understanding the physical and material dynamics of multipulse femtosecond laser interactions with surfaces'. Together they form a unique fingerprint.

Cite this