Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/1346
Title: Tuning light focusing with liquid crystal infiltrated graded index photonic crystals
Authors: Rezaei, B.
 Giden, İbrahim Halil
 Kurt, Hamza
200103
Keywords: Photonic crystals
photonics
graded photonic
Issue Date: Jan-2017
Publisher: Elsevier B.V.
Source: Rezaei, B., Giden, I. H., & Kurt, H. (2017). Tuning light focusing with liquid crystal infiltrated graded index photonic crystals. Optics Communications, 382, 28-35.
Abstract: We perform numerical analyses of tunable graded index photonic crystals based on liquid crystals. Light manipulation with such a photonic medium is explored and a new approach for active tuning of the focal distance is proposed. The graded index photonic crystal is realized using the symmetry reduced unit element in two-dimensional photonic crystals without modifying the dielectric filling fraction or cell size dimensions. By applying an external static electric field to liquid crystals, their refractive indices and thus, the effective refractive index of the whole graded index photonic crystal will be changed. Setting the lattice constant to a=400 nm yields a tuning of 680 nm for focal point position. This property can be used for designing an electro–optic graded index photonic crystal-based flat lens with a tunable focal point. Future optical systems may have benefit from such tunable graded indexlenses. © 2016 Elsevier B.V.
URI: https://www.sciencedirect.com/science/article/pii/S0030401816306484?via%3Dihub
https://hdl.handle.net/20.500.11851/1346
ISSN: 304018
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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