We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Photonic crystals: imaging by flat lens using negative refraction.
- Authors
Parimi, Patanjali V; Lu, Wentao T; Vodo, Plarenta; Sridhar, Srinivas
- Abstract
The positive refractive index of conventional optical lenses means that they need curved surfaces to form an image, whereas a negative index of refraction allows a flat slab of a material to behave as a lens and focus electromagnetic waves to produce a real image. Here we demonstrate this unique feature of imaging by a flat lens, using the phenomenon of negative refraction in a photonic crystalline material. The key advance that enabled us to make this observation lies in the design of a photonic crystal with suitable dispersion characteristics to achieve negative refraction over a wide range of angles.
- Publication
Nature, 2003, Vol 426, Issue 6965, p404
- ISSN
1476-4687
- Publication type
Journal Article
- DOI
10.1038/426404a