Negative refraction and imaging properties of circular photonic crystals
| Autor: | Lien Wen Chen, Hung Wen Wang, Meng Chu Tseng |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
business.industry Wave propagation Physics::Optics Dielectric Condensed Matter Physics Finite element method Electronic Optical and Magnetic Materials Optical axis Optics Negative refraction Vertical direction Slab Computer Science::Programming Languages Electrical and Electronic Engineering business Photonic crystal |
| Zdroj: | Physica B: Condensed Matter. 406:1044-1047 |
| ISSN: | 0921-4526 |
| Popis: | The electromagnetic wave propagation in a two-dimensional (2D) circular photonic crystal (CPC) is investigated. The CPC structure is composed of air holes in the dielectric background material. The finite element method is used to study the optical and propagating properties of the CPC slab. Numerical simulations show that negative refraction and near-field imaging can appear in a 2D CPC slab. We also find that the high-symmetry CPC slab possesses an optics axis along the vertical direction intersecting the symmetric center. As a result, the CPC slab can exhibit an excellent imaging performance when a source is placed on the optical axis. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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