On the applicability of the Maxwell Garnett effective medium model to media with a high density of cylindrical pores

Journal
Optical materials express  
Volume
14
Issue
4
Start Page
871
End Page
879
Citation
Optical Materials Express 14 (4): 871-879 (2024)
Publisher DOI
10.1364/OME.516125
Scopus ID
2-s2.0-85190166051
Publisher
Optica Publishing Group
The optical properties of dielectric materials with subwavelength cylindrical pores are commonly described by effective medium models. We compare the Maxwell Garnett and the Bruggeman effective medium models for porous silicon with simulations and experiments for the case of polarization orthogonal to the pore axis. The Maxwell Garnett model matches the results of the simulations even up to very high porosities. An experimental study of the effective permittivity of macroporous and mesoporous silicon is conducted by analyzing the Fabry-Pérot oscillations in the long-wavelength limit. These experimental results are also consistent with the Maxwell Garnett model. We advocate using this model for media with cylindrical pores in the future.
DDC Class
530: Physics
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/4.0/
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