Thermal coherence tomography using match filter binary phase coded diffusion waves.

Energy transport in diffusion-wave fields is gradient-driven and therefore diffuse, yielding depth-integrated responses with poor axial resolution. Using matched-filter principles, we propose a methodology enabling these parabolic diffusion-wave energy fields to exhibit energy localization akin to propagating hyperbolic wave fields. This not only improves axial resolution but also allows for deconvolution of individual responses of superposed axially discrete sources, opening a new field of depth-resolved subsurface thermal coherence tomography using diffusion waves.

[1]  Chance,et al.  Scattering and wavelength transduction of diffuse photon density waves. , 1993, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[2]  Andreas Mandelis,et al.  Diffusion Waves and their Uses , 2000 .

[3]  Alexander A Oraevsky,et al.  Optical and acoustic properties at 1064 nm of polyvinyl chloride-plastisol for use as a tissue phantom in biomedical optoacoustics , 2005, Physics in medicine and biology.

[4]  Andreas Mandelis,et al.  Thermophotonic lock-in imaging of early demineralized and carious lesions in human teeth. , 2011, Journal of biomedical optics.

[5]  J. J. Alvarado-Gil,et al.  Thermal wave oscillations and thermal relaxation time determination in a hyperbolic heat transport model , 2009 .

[6]  Otwin Breitenstein,et al.  Lock-in thermography : basics and use for functional diagnostics of electronic components , 2003 .

[7]  A. Mandelis.  Diffusion-wave fields : mathematical methods and Green functions , 2001 .

[8]  Chance,et al.  Refraction of diffuse photon density waves. , 1992, Physical review letters.

[9]  R. Anderson,et al.  Determination of optical properties of turbid media using pulsed photothermal radiometry , 1992, Physics in medicine and biology.

[10]  J. Burt.  The thermal-wave lens , 1986 .

[11]  A. Mandelis.  Diffusion-wave fields , 2001 .

[12]  Andreas Mandelis,et al.  Structure and the Reflectionless/Refractionless Nature of Parabolic Diffusion-Wave Fields , 2001 .

[13]  H. Rohling,et al.  Mismatched-filter design for periodic binary phased signals , 1989 .