Acceleration history in laser-ablative impulse measured using Velocity Interferometer (VISAR)

Koichi Mori, Kohei Anju, Akihiro Sasoh, Eugene Zaretsky

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations


The aim of the present study is to clarify the time-dependent characteristics of the impulsive force generated by irradiating a laser pulse onto metallic and polymer materials. A Velocity Interferometer System for Any Reflector (VISAR) is employed to measure the acceleration driven by the laser ablation. The VISAR has two delay-lines that enable the velocity measurement in the range from 10 m/s to 100 m/s. The ablation impulse is inferred from the measured acceleration history. The influence of the ambient air on the ablation pressure is investigated for aluminum using a Nd:YAG laser (wavelength: 1064 nm, pulse energy < 1 J, pulse duration ∼ 10 ns) and for a polymer material using a CO2 laser (wavelength: 1.06 μm, pulse energy < 10 J, pulse duration ∼ 2 μs). The results of the preliminary experiments revealed the promising potential of the VISAR measurement.

Original languageEnglish
Title of host publicationHigh-Power Laser Ablation VI
StatePublished - 23 Aug 2006
EventHigh-Power Laser Ablation VI - Taos, NM, United States
Duration: 7 May 200612 May 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6261 II
ISSN (Print)0277-786X


ConferenceHigh-Power Laser Ablation VI
Country/TerritoryUnited States
CityTaos, NM


  • CO laser
  • Force measurement
  • Nd:YAG
  • Velocity interferometer

ASJC Scopus subject areas

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


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