Wavelength dependence of light diffusion in strongly scattering macroporous gallium phosphide

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

doi:10.1103/PhysRevA.77.035803

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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Abstract

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 language	Undefined
Pages (from-to)	1-1
Number of pages	1
Journal	Physical review A: Atomic, molecular, and optical physics
Volume	77
Issue number	035803
DOIs	https://doi.org/10.1103/PhysRevA.77.035803
Publication status	Published - 2008

Keywords

IR-59872
METIS-247293

Access to Document

10.1103/PhysRevA.77.035803

wavelength

Cite this

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abstract = "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.",

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AU - Mosk, Allard

AU - Lagendijk, Aart

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AB - 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.

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KW - METIS-247293

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DO - 10.1103/PhysRevA.77.035803

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