Abstract

In this paper, we investigate the effect of laser energy on laserinduced breakdown emission intensity and average temperature in a short-pulse plasma generated by using 140 fs laser excitation. Both line emission and continuum background intensity and plasma temperature decrease very rapidly after excitation compared to the more conventional nanosecond pulse excitation. Both emission intensity and plasma temperature increase with increasing laser energy. However, the intensity increase appears to be mostly related to the amount of material ablated. Also, nongated laser-induced breakdown spectroscopy (LIBS) is demonstrated using a high-pulse (1 kHz) pulse repetition rate.

Enhanced temperature and emission from a standoff 266 nm laser initiated LIBS plasma using a simultaneous 10.6 μm CO₂ laser pulse

Avishekh Pal, Robert D. Waterbury, Edwin L. Dottery, and Dennis K. Killinger
Opt. Express 17(11) 8856-8870 (2009)

Enhancement of LIBS emission using antenna-coupled microwave

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Opt. Express 21(24) 29755-29768 (2013)

Spatial and temporal dependence of interspark interactions in femtosecond-nanosecond dual-pulse laser-induced breakdown spectroscopy

Jon Scaffidi, William Pearman, Marion Lawrence, J. Chance Carter, Bill W. Colston, and S. Michael Angel
Appl. Opt. 43(27) 5243-5250 (2004)

Characterization of near-infrared low energy ultra-short laser pulses for portable applications of laser induced breakdown spectroscopy

Alexander W. Schill, David A. Heaps, Dimitra N. Stratis-Cullum, Bradley R. Arnold, and Paul M. Pellegrino
Opt. Express 15(21) 14044-14056 (2007)

Dual-pulse laser-induced breakdown spectroscopy with combinations of femtosecond and nanosecond laser pulses

Jon Scaffidi, Jack Pender, William Pearman, Scott R. Goode, Bill W. Colston, J. Chance Carter, and S. Michael Angel
Appl. Opt. 42(30) 6099-6106 (2003)