| Issue |
Europhys. Lett.
Volume 48, Number 1, October I 1999
|
|
|---|---|---|
| Page(s) | 22 - 28 | |
| Section | Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics | |
| DOI | https://doi.org/10.1209/epl/i1999-00108-7 | |
| Published online | 01 September 2002 | |
Optical transmission through strong scattering and highly polydisperse media
1
Van der Waals-Zeeman Instituut, Universiteit van Amsterdam Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands
2
Ames Laboratory and Department of Physics and Astronomy Iowa State University, Ames, Iowa 50011, USA
3
Institute for Theory of Condensed Matter, Department of Physics University of Karlsruhe - P.O. Box 6980, 76128 Karlsruhe, Germany
Received:
21
December
1999
Accepted:
3
August
1999
We present near infrared total transmission measurements through samples
of randomly packed silicon powders.
At different wavelengths we analyze in detail the scattering properties
and the effects of residual absorption.
The lowest value of 
, where k is the wave vector and
ls is the scattering mean free path, is 3.2.
We also observe that is nearly constant over a wide wavelength
range.
This phenomenon is associated with the high polydispersity of the particles.
We use the energy density coherent potential approximation to explain
our measurements.
PACS: 42.25.Dd – Wave propagation in random media / 78.30.Ly – Disordered solids
© EDP Sciences, 1999
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