Wavelength dependence of light diffusion in strongly scattering macroporous gallium phosphide

W.H. Peeters, Ivo Micha Vellekoop, Allard Mosk, Aart Lagendijk

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We present time-resolved measurements of light transport through strongly scattering macroporous gallium phosphide at various vacuum wavelengths between 705 nm and 855 nm. Within this range the transport mean free path is strongly wavelength dependent, whereas the observed energy velocity is shown to be independent of the wavelength. We conclude that microscopic resonances, which can strongly slow down the diffusion process in, e.g., granular TiO2, are absent in macroporous gallium phosphide in the wavelength region of concern.
Original languageUndefined
Pages (from-to)1-1
Number of pages1
JournalPhysical review A: Atomic, molecular, and optical physics
Issue number035803
Publication statusPublished - 2008


  • IR-59872
  • METIS-247293

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