Photonic crystals and negative refractive index materials
نویسندگان
چکیده
We review the research of our group on propagation of electromagnetic waves in photonic crystals (PCs) and micrometer scale left-handed materials (LHMs). The main topics that we focus on regarding PCs are the modification of the spontaneous emission rate of sources embedded into them, their ability to produce beams with high directionality and their negative refraction and focusing properties, phenomena originated from the complex PC dispersion properties. Regarding the left-handed materials (LHMs) we present our attempts to fabricate them in micrometer scale.
منابع مشابه
Studying Focusing Properties of Graded Index Photonic Crystals Made of Material with Different Refractive Index
In this paper we investigate focusing properties of graded index (GRIN) photonic crystal (PC) structures which are composed of different materials with different refractive indices. GRIN PC structure is constructed from air holes in dielectric background. The holes radii are varied in the normal direction to the propagation in such a way that a parabolic effective refractive index is produced. ...
متن کاملInvestigation of thermal tunable nano metallic photonic crystal filter with mirror symmetry
Using the transfer matrix method, the effect of temperature on thetransmission spectra of thermal tunable nano metallic photonic crystal filter has beeninvestigated. Three different materials H (high refractive index material), L (lowrefractive index material) and M as a metallic layer, have been used to make thisstructure. M layer is considered to be Silver. The complex refractive index of Sil...
متن کاملDesign and Simulation 4-Channel Demultiplexer Based on Photonic Crystals Ring Resonators
In this paper, a new design of demultiplexer based on two-dimensional photonic crystal ringresonator is proposed. The structure is made of a hexagonal lattice of silicon rods with therefractive index 3.46 in coefficient of air with refractive index 1. The transmission efficiencyand Quality factor for our proposed demultiplexer, respectively, are more than 65% and1600. The normalized transmissio...
متن کاملCu(2)O inverse woodpile photonic crystals by prism holographic lithography and electrodeposition.
www.MaterialsViews.com C O M M Cu 2 O Inverse Woodpile Photonic Crystals by Prism Holographic Lithography and Electrodeposition U N IC Sung-Gyu Park , Masao Miyake , Seung-Man Yang , * and Paul V. Braun * A IO N Fabrication of three-dimensional (3D) photonic crystals (PCs) with a complete photonic band gap (PBG) at optical wavelengths has been quite challenging. [ 1–4 ] Because woodpile structu...
متن کاملFocusing concave lens using photonic crystals with magnetic materials.
The guided modes lying in the upper gap-edge band in the photonic band structure of photonic crystals have negative values of refractive index. This feature generates many interesting optical phenomena, and some spectacular photonic devices such as focusing slabs have been developed. We report the design of a photonic-crystal, planoconcave lens for focusing incident parallel light, and theoreti...
متن کامل