منابع مشابه
Larger Two-Dimensional Photonic Band Gaps.
Absolute photonic band gaps in two-dimensional square and honeycomb lattices of circular crosssection rods can be increased by reducing the structure symmetry. The addition of a smaller diameter rod into the center of each lattice unit cell lifts band degeneracies to create significantly larger band gaps. Symmetry breaking is most effective at filling fractions near those which produce absolute...
متن کاملGlobal Photonic Band Gaps in Two-Dimensional Metallic Lattices
The fundamental and higher frequency global photonic band gaps are obtained for transverse electric (TE) and transverse magnetic (TM) modes in photonic band gap (PBG) structures consisting of two-dimensional (2D) square and triangular lattices of perfectly conducting cylinders. The global photonic band gaps in metallic lattice, which are found to differ qualitatively as well as quantitatively f...
متن کاملPhotonic band gaps and localization in two-dimensional metallic quasicrystals
– We report on experimental observation of photonic stop bands in two-dimensional metallic Penrose lattice. We investigated the defect characteristics, and observed strongly localized cavity modes below the plasma frequency. The absence of the translational symmetry allowed to change the defect frequencies and localization properties of the defect modes. Propagation of photons along highly loca...
متن کاملMaximizing Band Gaps in Two-Dimensional Photonic Crystals
This paper is devoted to a numerical algorithm for the maximization of band gaps in two-dimensional photonic crystals in square lattices. We first apply the finite element method to solve the eigenvalue problem, then use the piecewise constant level set (PCLS) method to maximize the band gaps. The PCLS method is very powerful for representing and modeling regions of different structures. Extrem...
متن کاملComplete band gaps in two-dimensional photonic quasicrystals
Marian Florescu,1,* Salvatore Torquato,2 and Paul J. Steinhardt2 1Department of Physics, Princeton University, Princeton, New Jersey 08544, USA 2Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA and Princeton Center for Theoretical Sciences, Princeton University, Princeton, New Jersey 08544, USA Received 1 August 2009; revised manuscript received 11 September 2009;...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1996
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.77.2949