An inversion method is developed to exploit the increased spectral information content brought about by recent advancements in laser technologies. Traditional tomographic techniques have mostly relied on one or two wavelengths, resulting in the requirement of a large number of projections for a satisfactory reconstruction. In this paper, we investigate the use of hyperspectral absorption spectroscopy in tomographic measurements. Our simulations clearly demonstrate that the use of hyperspectral absorption data significantly reduces the number of projections, enables simultaneous mapping of temperature and species concentration, and provides more stable reconstruction when compared with traditional absorption tomographic techniques. This investigation should lay the groundwork for expanded use of hyperspectral lasers in imaging measurements.
© 2008 Optical Society of AmericaPDF Article