It is shown that plasma polarization measurements can be used to enhance the sensitivity of laser-induced breakdown spectroscopy (LIBS). The polarization of the plasma emission is used to suppress the continuum with only slight attenuation of the discrete atomic and ionic spectra. The method is demonstrated for LIBS detection of copper and carbon samples ablated by pairs of femtosecond laser pulses.
© 2009 Optical Society of America
Original Manuscript: October 21, 2008
Manuscript Accepted: November 17, 2008
Published: February 12, 2009
Youbo Zhao, Sima Singha, Yaoming Liu, and Robert J. Gordon, "Polarization-resolved laser-induced breakdown spectroscopy," Opt. Lett. 34, 494-496 (2009)