Analytical performances of laser-induced micro-plasma of Al samples with single and double ultrashort pulses in air and with Ar-jet: A comparative study

作者：Semerok A^*; Dutouquet C

来源：Spectrochimica Acta Part B: Atomic Spectroscopy , 2014, 99: 163-171.

DOI：10.1016/j.sab.2014.06.022

• LIBS
• Femtosecond ablation
• Double pulse
• Microanalyze

Ultrashort pulse laser microablation coupled with optical emission spectroscopy was under study to obtain several micro-LIBS analytical features (shot-to-shot reproducibility, spectral line intensity and lifetime, calibration curves, detection limits). Laser microablation of Al matrix samples with known Cu- and Mg-concentrations was performed by single and double pulses of 50 fs and 1 ps pulse duration in air and with Ar-jet.
The micro-LIBS analytical features obtained under different experimental conditions were characterized and compared. The highest shot-to-shot reproducibility and gain in plasma spectral line intensity were obtained with double pulses with Ar-jet for both 50 fs and 1 ps pulse durations. The best calibration curves were obtained with 1 ps pulse duration with Ar-jet. Micro-LIES with ultrashort double pulses may find its effective application for surface elemental microcartography.

• 出版日期2014-9-1
• 单位中国地震局