skip to main content

DOE PAGESDOE PAGES

Title: Mechanisms governing the interaction of metallic particles with nanosecond laser pulses

Here, the interaction of nanosecond laser pulses at 1064- and 355-nm with micro-scale, nominally spherical metallic particles is investigated in order to elucidate the governing interaction mechanisms as a function of material and laser parameters. The experimental model used involves the irradiation of metal particles located on the surface of transparent plates combined with time-resolved imaging capable of capturing the dynamics of particle ejection, plume formation and expansion along with the kinetics of the dispersed material from the liquefied layer of the particle. The mechanisms investigated in this work are informative and relevant across a multitude of materials and irradiation geometries suitable for the description of a wide range of specific applications. The experimental results were interpreted using physical models incorporating specific processes to assess their contribution to the overall observed behaviors. Analysis of the experimental results suggests that the induced kinetic properties of the particle can be adequately described using the concept of momentum coupling introduced to explain the interaction of plane metal targets to large-aperture laser beams. The results also suggest that laser energy deposition on the formed plasma affects the energy partitioning and the material modifications to the substrate.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Report Number(s):
LLNL-JRNL-680178
Journal ID: ISSN 1094-4087; OPEXFF; 804078
Grant/Contract Number:
AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Optics Express
Additional Journal Information:
Journal Volume: 24; Journal Issue: 7; Journal ID: ISSN 1094-4087
Publisher:
Optical Society of America (OSA)
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; particles; ultrafast technology; surface dynamics; damage; energy transfer
OSTI Identifier:
1461743

Demos, Stavros G., Negres, Raluca A., Raman, Rajesh N., Shen, Nan, Rubenchik, Alexander M., and Matthews, Manyalibo J.. Mechanisms governing the interaction of metallic particles with nanosecond laser pulses. United States: N. p., Web. doi:10.1364/OE.24.007792.
Demos, Stavros G., Negres, Raluca A., Raman, Rajesh N., Shen, Nan, Rubenchik, Alexander M., & Matthews, Manyalibo J.. Mechanisms governing the interaction of metallic particles with nanosecond laser pulses. United States. doi:10.1364/OE.24.007792.
Demos, Stavros G., Negres, Raluca A., Raman, Rajesh N., Shen, Nan, Rubenchik, Alexander M., and Matthews, Manyalibo J.. 2016. "Mechanisms governing the interaction of metallic particles with nanosecond laser pulses". United States. doi:10.1364/OE.24.007792. https://www.osti.gov/servlets/purl/1461743.
@article{osti_1461743,
title = {Mechanisms governing the interaction of metallic particles with nanosecond laser pulses},
author = {Demos, Stavros G. and Negres, Raluca A. and Raman, Rajesh N. and Shen, Nan and Rubenchik, Alexander M. and Matthews, Manyalibo J.},
abstractNote = {Here, the interaction of nanosecond laser pulses at 1064- and 355-nm with micro-scale, nominally spherical metallic particles is investigated in order to elucidate the governing interaction mechanisms as a function of material and laser parameters. The experimental model used involves the irradiation of metal particles located on the surface of transparent plates combined with time-resolved imaging capable of capturing the dynamics of particle ejection, plume formation and expansion along with the kinetics of the dispersed material from the liquefied layer of the particle. The mechanisms investigated in this work are informative and relevant across a multitude of materials and irradiation geometries suitable for the description of a wide range of specific applications. The experimental results were interpreted using physical models incorporating specific processes to assess their contribution to the overall observed behaviors. Analysis of the experimental results suggests that the induced kinetic properties of the particle can be adequately described using the concept of momentum coupling introduced to explain the interaction of plane metal targets to large-aperture laser beams. The results also suggest that laser energy deposition on the formed plasma affects the energy partitioning and the material modifications to the substrate.},
doi = {10.1364/OE.24.007792},
journal = {Optics Express},
number = 7,
volume = 24,
place = {United States},
year = {2016},
month = {4}
}