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Polarization-resolved measurements of picosecond laser-ablated plumes

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.2006973· OSTI ID:20714011
;  [1]
  1. Department of Physics, Indian Institute of Technology Kanpur, Kanpur 208016 (India)
We discuss the ablation of aluminum plasma using picosecond pulsed laser in vacuum and in ambient atmosphere of nitrogen. The plume dynamics of picosecond and nanosecond laser-ablated plumes in ambient atmosphere is discussed. The degree of polarization is measured using optical emission spectroscopy for the Al III transition 4s {sup 2}S{sub 1/2}-4p {sup 2}P{sub 3/2}{sup o} at 569.6 nm. Strong anisotropy is observed using picosecond laser pulse as compared to nanosecond laser pulse.
OSTI ID:
20714011
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 98; ISSN JAPIAU; ISSN 0021-8979
Country of Publication:
United States
Language:
English