We used a CW laser as a narrow-band (~50kHz) tunable LIF excitation source to probe absorption from selected atomic transitions (Al, U etc. ) in a ns laser ablation plume. A comparison of fluorescence signal with respect to emission spectroscopy show significant increase in the magnitude and persistence from selected Al and U transitions in a LIBS plume. The high spectral resolution provided by the LIF measurement allows peaks to be easily separated even if they overlap in the emission spectra.
Revised: February 13, 2017 |
Published: February 6, 2017
Citation
Harilal S.S., N.L. LaHaye, and M.C. Phillips. 2017.High-Resolution Spectroscopy of Laser Ablation Plumes Using Laser-Induced Fluorescence.Optics Express 25, no. 3:2312-2326.PNNL-SA-119894.doi:10.1364/OE.25.002312