Dielectric Optical Cloak

Details Dielectric Optical Cloak Dielectric Optical Cloak

2009-04-23

arxiv.org/abs/0904.3602v1

Physics

Optics

11 pages, 4 figures

Scientific paper

Invisibility or cloaking has captured human's imagination for many years. With the recent advancement of metamaterials, several theoretical proposals show cloaking of objects is possible, however, so far there is a lack of an experimental demonstration at optical frequencies. Here, we report the first experimental realization of a dielectric optical cloak. The cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface which imitates the reflection of a flat surface. Our cloak consists only of isotropic dielectric materials which enables broadband and low-loss invisibility at a wavelength range of 1400-1800 nm.

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