A comparison of single shot nanosecond and femtosecond polarization-resolved laser-induced breakdown spectroscopy of Al

摘要

Aluminum samples have been analyzed by femtosecond polarization-resolved laser-induced breakdown spectroscopy (fs-PRLIBS).We compare the obtained spectra with those obtained from nanosecond PRLIBS (ns-PRLIBS).The main specific features of fs-PRLIBS are that a lower plasma temperature leads to a low level of continuum and no species are detected from the ambient gas.Furthermore,signals obtained by fs-PRLIBS show a higher stability than those of ns-PRLIBS.However,more elements are detected in the ns-PRLIBS spectra.