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Title: Laser fluence dependence on emission dynamics of ultrafast laser induced copper plasma

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4967313· OSTI ID:1339811
 [1];  [2];  [3]; ORCiD logo [4];  [4]
  1. Raman Research Institute, Bangalore (India); Complessoe Univ. Monte S. Angelo, Napoli (Italy)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Purdue Univ., West Lafayette, IN (United States)
  3. Raman Research Institute, Bangalore (India)
  4. Complessoe Univ. Monte S. Angelo, Napoli (Italy)

The characteristic emission features of a laser-produced plasma strongly depend strongly on the laser fluence. We investigated the spatial and temporal dynamics of neutrals and ions in femtosecond laser (800 nm, ~40 fs, Ti:Sapphire) induced copper plasma in vacuum using both optical emission spectroscopy (OES) and spectrally resolved two-dimensional (2D) imaging methods over a wide fluence range of 0.5-77.5 J/cm2. 2D fast gated monochromatic images showed distinct plume splitting between the neutral and ions especially at moderate to higher fluence ranges. OES studies at low to moderate laser fluence regime confirm intense neutral line emission over the ion emission whereas this trend changes at higher laser fluence with dominance of the latter. This evidences a clear change in the physical processes involved in femtosecond laser matter interaction at high input laser intensity. Furthermore, the obtained ion dynamics resulting from the OES, and spectrally resolved 2D imaging are compared with charged particle measurement employing Faraday cup and Langmuir probe and results showed good correlation.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1339811
Report Number(s):
PNNL-SA-119809; DN2001000
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 18; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (7)

A compact non-differential approach for modeling laser ablation plasma dynamics journal February 2017
Investigation of femtosecond laser-produced plasma from various metallic targets using the Langmuir probe characteristic journal October 2017
Pulse width dependent dynamics of laser-induced plasma from a Ni thin film journal February 2019
Progress of laser-induced breakdown spectroscopy in nuclear industry applications journal October 2019
Ultrafast dynamics observation during femtosecond laser-material interaction journal September 2019
Ge-Sb-Te Chalcogenide Thin Films Deposited by Nanosecond, Picosecond, and Femtosecond Laser Ablation journal May 2019
Structure-Mediated Excitation of Air Plasma and Silicon Plasma Expansion in Femtosecond Laser Pulses Ablation journal January 2018

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