TY  - JOUR
AU  - Brandt, Julia
AU  - Dittrich, Guido
AU  - Thelen, Marc
AU  - Renner, Hagen
AU  - Huber, Patrick
AU  - Eich, Manfred
AU  - Petrov, Alexander
TI  - On the applicability of the Maxwell Garnett effective medium model to media with a high density of cylindrical pores
JO  - Optical materials express
VL  - 14
IS  - 4
SN  - 2159-3930
CY  - Washington, DC
PB  - Optica
M1  - PUBDB-2024-05000
SP  - 871
PY  - 2024
N1  - Waiting for fulltext 
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001229259000005
DO  - DOI:10.1364/OME.516125
UR  - https://bib-pubdb1.desy.de/record/611666
ER  -