Mechanisms governing the interaction of metallic particles with nanosecond laser pulses

Stavros G. Demos, Raluca A. Negres, Rajesh N. Raman, Nan Shen, Alexander M. Rubenchik, Manyalibo J. Matthews

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)7792-7815
Number of pages24
JournalOptics Express
Volume24
Issue number7
DOIs
StatePublished - Apr 4 2016
Externally publishedYes

Fingerprint

pulses
lasers
interactions
irradiation
kinetics
metal particles
ejection
plumes
apertures
laser beams
momentum
expansion
energy
geometry
metals

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Demos, S. G., Negres, R. A., Raman, R. N., Shen, N., Rubenchik, A. M., & Matthews, M. J. (2016). Mechanisms governing the interaction of metallic particles with nanosecond laser pulses. Optics Express, 24(7), 7792-7815. https://doi.org/10.1364/OE.24.007792

Mechanisms governing the interaction of metallic particles with nanosecond laser pulses. / Demos, Stavros G.; Negres, Raluca A.; Raman, Rajesh N.; Shen, Nan; Rubenchik, Alexander M.; Matthews, Manyalibo J.

In: Optics Express, Vol. 24, No. 7, 04.04.2016, p. 7792-7815.

Research output: Contribution to journalArticle

Demos, SG, Negres, RA, Raman, RN, Shen, N, Rubenchik, AM & Matthews, MJ 2016, 'Mechanisms governing the interaction of metallic particles with nanosecond laser pulses', Optics Express, vol. 24, no. 7, pp. 7792-7815. https://doi.org/10.1364/OE.24.007792
Demos SG, Negres RA, Raman RN, Shen N, Rubenchik AM, Matthews MJ. Mechanisms governing the interaction of metallic particles with nanosecond laser pulses. Optics Express. 2016 Apr 4;24(7):7792-7815. https://doi.org/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. In: Optics Express. 2016 ; Vol. 24, No. 7. pp. 7792-7815.
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