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High Degree of Optical Tunability of Self-Assembled Photonic-Plasmonic Crystals by Filling Fraction Modification

Authors

  • Martín López-García,

    1. Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-U. Vigo C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
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  • Juan F. Galisteo-López,

    1. Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-U. Vigo C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
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  • Álvaro Blanco,

    1. Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-U. Vigo C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
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  • Cefe López,

    Corresponding author
    1. Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-U. Vigo C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain
    • Instituto de Ciencia de Materiales de Madrid (CSIC) and Unidad Asociada CSIC-U. Vigo C/Sor Juana Inés de la Cruz 3, 28049 Madrid, Spain.
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  • Antonio García-Martín

    1. Instituto de Microelectrónica de Madrid (IMM-CSIC), C/Isaac Newton 8, 28760 Tres Cantos, Madrid, Spain
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Abstract

The optical properties of two-dimensional hybrid photonic-plasmonic crystals are fine-tuned by modifying the dielectric component of the system. The filling fraction of the dielectric component in monolayers of spheres deposited on gold substrates is controlled by means of oxygen-plasma etching. Doing so enables spectral tuning of the optical modes of the system. Experiments are performed on both optically passive and active samples showing the possibility for strong modification of the emission properties of samples containing emitters distributed within the spheres. The change in sphere diameter needed to substantially modify the sample's optical response points to a potential use of these samples as sensors or tunable emitting devices if appropriate polymeric components are employed.

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