Abstract:Laser-induced breakdown spectroscopy (LIBS) has recently demonstrated its unrivaled performance for broadband elemental imaging of surfaces. The dimensions of the laser sampling spot still being potentially larger than the interfaces of chemical domains, the plasma created at each location can be largely varying and inhomogeneous with contributions from the different sides of the interface. This variation can become problematic when imaging it on fiber bundles connected to multiple spectrometers. A spatially h… Show more
“…Köhler optics was initially conducted to achieve homogenization collection of plasma emission for multichannel spectrometers in LIBS. 35,36 It can uniformly project the emission from different regions of the plasma onto the surface of the ber bundle. Moreover, Köhler optics can collect plasma emission over a wide eld of view, which has been overlooked in previous research.…”
Spectral stability improvement through various wide fields of view collecting optics, averaging temperature and ionization conditions, reducing the impact of plasma morphology fluctuations on acquisition.
“…Köhler optics was initially conducted to achieve homogenization collection of plasma emission for multichannel spectrometers in LIBS. 35,36 It can uniformly project the emission from different regions of the plasma onto the surface of the ber bundle. Moreover, Köhler optics can collect plasma emission over a wide eld of view, which has been overlooked in previous research.…”
Spectral stability improvement through various wide fields of view collecting optics, averaging temperature and ionization conditions, reducing the impact of plasma morphology fluctuations on acquisition.
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