Title :
Non-euclidean ideas for broadband invisibility
Author :
Leonhardt, Ulf ; Tyc, Tomas ; Chen, Huanyang
Author_Institution :
Sch. of Phys. & Astron., Univ. of St Andrews, St. Andrews, UK
Abstract :
Invisibility and negative refraction are both applications of transformation optics where the material of a device performs a coordinate transformation for electromagnetic fields. The device creates the illusion that light propagates through empty flat space, whereas in physical space light is bent around a hidden interior or seems to run backwards in space or time. All the previous proposals for invisibility require materials with extreme properties. We show that transformation optics of a curved, non-Euclidean space, such as the surface of a virtual sphere, relaxes these requirements and can lead to invisibility in a broad band of the spectrum.
Keywords :
geometrical optics; light propagation; light refraction; broadband invisibility; negative refraction; noneuclidean ideas; transformation optics; virtual sphere; Electromagnetic propagation; Geometrical optics; Metamaterials; Optical devices; Optical distortion; Optical materials; Optical propagation; Optical refraction; Physics; Space technology;
Conference_Titel :
Lasers and Electro-Optics, 2009 and 2009 Conference on Quantum electronics and Laser Science Conference. CLEO/QELS 2009. Conference on
Print_ISBN :
978-1-55752-869-8
Electronic_ISBN :
978-1-55752-869-8