On light propagation through glass bead packings
| Autor: | Jaroslav Ricka, W. Leutz |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Materials science
Wave propagation Mean free path Scattering business.industry Attenuation length Atomic and Molecular Physics and Optics Light scattering Electronic Optical and Magnetic Materials Wavelength Optics Monochromatic color Electrical and Electronic Engineering Physical and Theoretical Chemistry business Absorption (electromagnetic radiation) |
| Zdroj: | Optics Communications. 126:260-268 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/0030-4018(96)00022-3 |
| Popis: | We investigated the transmission of monochromatic light through porous media consisting of packings of glass beads (bead diameters d in the range of 0.16–0.4 mm) immersed in water. The light propagation through such strongly scattering random media is characterized by the transport mean free path l ∗ (distance over which the direction of propagation is randomized) and the diffusive absorption length L a . We determined these parameters by combining measurements of total transmission (in the strong absorption regime) with reference measurements on samples with known l ∗ . We obtain l ∗ ≈ 7d at the wavelength of 633 nm and l ∗ ≈ 9d at 515 nm; the absorption length L a lies between 5 and 10 mm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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