Laser-induced breakdown spectroscopy with laser irradiation on mid-infrared hydride stretch transitions: polystyrene
- First Online:
- Cite this article as:
- Khachatrian, A. & Dagdigian, P.J. Appl. Phys. B (2009) 97: 243. doi:10.1007/s00340-009-3571-3
- 101 Downloads
An investigation of laser-induced breakdown spectroscopy (LIBS) of a polymer (polystyrene) with laser irradiation in the mid-infrared (mid-IR) spectral region is presented. A particular goal of this study is to determine whether the LIBS signals are enhanced when the laser wavelength is tuned to that of a vibrational transition of the polymer. Significant enhancements were indeed observed upon irradiation on the C–H stretch fundamental vibrational transitions. In addition, mode-specific effects were observed; the signals were stronger, compared to the relative intensities in the one-photon absorption spectrum, for irradiation on the aromatic (phenyl) C–H stretch transitions, rather than those involving aliphatic (backbone) C–H modes. The applicability of mid-IR resonance enhanced LIBS for detection of residues on surfaces is discussed.