Carpet Cloak Optical

In the past few years carpet cloaking has attracted interest because of its feasibility at optical frequencies and potential in stealth technologies.

Carpet cloak optical.

Box 350 chengdu 610209 china. Metasurfaces have been proposed as a method to engineer ultra thin carpet cloaking surfaces due to their abilities to manipulate wavefronts polarization and phase at subwavelength scale. Andrews in scotland who was not involved in either study says the future of optical legerdemain lies not in hiding. The cloak consists only of isotropic dielectric materials which enables broadband and low loss invisibility at.

The carpet cloak means that you conceal the object under a layer. Ulf leonhardt a physicist at the university of st. Finally from a distance the carpet cloak looks like a mirror so scientists have to create this effect without the object looking like a mirror which will take some time. In this letter we numerically and experimentally demonstrate the carpet cloaking effect by a rectangular lattice two dimensional photonic crystal pc exhibiting a semi dirac cone sdc dispersion phenomenon.

The optical carpet cloak is designed using quasi conformal mapping to conceal an object that is placed under a curved reflecting surface by imitating the reflection of a flat surface. Besides invisibility all kinds of optical illusion schemes can be made based on the concept where the observer. However achieving broadband carpet cloaking with a. Dual wavelength carpet cloak using ultrathin metasurface jianing yang state key laboratory of optical technologies on nano fabrication and micro engineering institute of optics and electronics chinese academy of sciences p.

To couple light into and out of the waveguide two gratings are made parallel to the sides of the. It is shown that the cloak is able to mimic the ground plane by fully restoring the amplitude and phase distributions for both transverse electric and transverse magnetic polarizations with a relatively wide frequency and angular widths response. A metasurface carpet cloak for millimeter wave range with polarization independent performance is experimentally demonstrated.