@incollection{prahl97c,
  author = {S. A. Prahl},
  title = {Pulsed Photothermal Radiometry of Inhomogeneous Tissue},
  booktitle = {Progress in Photothermal and Photoacoustic Science and Technology Series: Life and Earth Sciences},
  publisher = {SPIE Optical Engineering Press},
  volume = {3},
  year = {1997},
  pages = {516--438},
  editor = {A. Mandelis and P. Hess},
  abstract = {This chapter describes a technique for extracting an internal thermal profile using measurements of the surface temperature. The method is applicable to materials and tissues with uniform thermal properties and non-uniform optical properties. The technique is based on singular value decomposition and works reasonably well down to depths of about 500\,$\mu$m. The uncertainty in the location of the internal temperature layers grows linearly with the depth of the layer. The inversion algorithm is tested using computer simulations and experiments on colored glass. Analysis of \textit{in vivo} data from a tanning experiment on human skin is presented to show the potential of the technique.},
}