Laser Induced Breakdown Spectroscopy (LIBS) Apparatus and Method for Performing Spectral Imaging of a Sample Surface
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United States of America Patent
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Dec 3, 2015
app pub date -
May 28, 2015
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May 29, 2014
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Abstract
This invention discloses a laser induced breakdown spectroscopy (LIBS) apparatus and method for performing spectral imaging of a sample surface. A high repetition rate pulsed laser is employed to produce a train of laser pulses. The laser beam is then scanned by a scanning mechanism over a surface of the subject sample. Each laser pulse produces a LIBS signal from a specific position of the sample surface, which is then measured by a spectrometer device to obtain a LIBS spectrum. The position of the laser beam is recorded and correlated to the corresponding LIBS spectrum. A two dimensional (2-D) mapping of the sample surface to its LIBS spectra is acquired in this manner to construct a LIBS spectral image of the sample surface.
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