Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches

By means of heuristic optimization techniques, we estimate the unknown refractive index of one layer of a periodic natural multilayer system from far-field reflectance data. To take into account the dispersive characteristics of the material, we employ two different strategies. The first is based on...

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Autores principales:	Skigin, Diana Carina, Inchaussandague, Marina Elizabeth
Publicado:	2017
Materias:	Multilayers Permittivity Reflection Best estimates Dielectric permittivities Dispersive characteristic Heuristic optimization technique Natural multilayers Reflectance spectrum Reflectance values Spectral range Refractive index
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v56_n7_p1807_Skigin http://hdl.handle.net/20.500.12110/paper_1559128X_v56_n7_p1807_Skigin
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_1559128X_v56_n7_p1807_Skigin
record_format	dspace
spelling	paper:paper_1559128X_v56_n7_p1807_Skigin2023-06-08T16:23:42Z Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches Skigin, Diana Carina Inchaussandague, Marina Elizabeth Multilayers Permittivity Reflection Best estimates Dielectric permittivities Dispersive characteristic Heuristic optimization technique Natural multilayers Reflectance spectrum Reflectance values Spectral range Refractive index By means of heuristic optimization techniques, we estimate the unknown refractive index of one layer of a periodic natural multilayer system from far-field reflectance data. To take into account the dispersive characteristics of the material, we employ two different strategies. The first is based on the retrieval of Lorentz model-related parameters, to describe the unknown dielectric permittivity within a specific spectral range. The second strategy, based on a wavelength-by-wavelength approach, takes into account the reflectance values for each wavelength at a time. Through some examples, we compare the performance of both strategies when they look for the best estimates and analyze the error involved in each case. The applicability of both approaches to the case of noisy reflectance spectra is also explored. © 2017 Optical Society of America. Fil:Skigin, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Inchaussandague, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v56_n7_p1807_Skigin http://hdl.handle.net/20.500.12110/paper_1559128X_v56_n7_p1807_Skigin
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Multilayers Permittivity Reflection Best estimates Dielectric permittivities Dispersive characteristic Heuristic optimization technique Natural multilayers Reflectance spectrum Reflectance values Spectral range Refractive index
spellingShingle	Multilayers Permittivity Reflection Best estimates Dielectric permittivities Dispersive characteristic Heuristic optimization technique Natural multilayers Reflectance spectrum Reflectance values Spectral range Refractive index Skigin, Diana Carina Inchaussandague, Marina Elizabeth Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
topic_facet	Multilayers Permittivity Reflection Best estimates Dielectric permittivities Dispersive characteristic Heuristic optimization technique Natural multilayers Reflectance spectrum Reflectance values Spectral range Refractive index
description	By means of heuristic optimization techniques, we estimate the unknown refractive index of one layer of a periodic natural multilayer system from far-field reflectance data. To take into account the dispersive characteristics of the material, we employ two different strategies. The first is based on the retrieval of Lorentz model-related parameters, to describe the unknown dielectric permittivity within a specific spectral range. The second strategy, based on a wavelength-by-wavelength approach, takes into account the reflectance values for each wavelength at a time. Through some examples, we compare the performance of both strategies when they look for the best estimates and analyze the error involved in each case. The applicability of both approaches to the case of noisy reflectance spectra is also explored. © 2017 Optical Society of America.
author	Skigin, Diana Carina Inchaussandague, Marina Elizabeth
author_facet	Skigin, Diana Carina Inchaussandague, Marina Elizabeth
author_sort	Skigin, Diana Carina
title	Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
title_short	Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
title_full	Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
title_fullStr	Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
title_full_unstemmed	Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches
title_sort	determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: comparison of different approaches
publishDate	2017
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1559128X_v56_n7_p1807_Skigin http://hdl.handle.net/20.500.12110/paper_1559128X_v56_n7_p1807_Skigin
work_keys_str_mv	AT skigindianacarina determinationofthespectraldependentrefractiveindexofasinglelayerinanaturalmultilayersystemcomparisonofdifferentapproaches AT inchaussandaguemarinaelizabeth determinationofthespectraldependentrefractiveindexofasinglelayerinanaturalmultilayersystemcomparisonofdifferentapproaches
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Determination of the spectral-dependent refractive index of a single layer in a natural multilayer system: Comparison of different approaches

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