Now showing items 1-5 of 5
Dielectric metamaterial magnifier creating a virtual color image with far-field subwavelength information
We propose an approach for far-field optical subwavelength imaging by using a dielectric metamaterial magnifier with gradient refractive index. Different from previous superlens and hyperlens that form a real image with ...
Delay-bandwidth and delay-loss limitations for cloaking of large objects
We show that the difficulty of cloaking is fundamentally limited by delay-loss and delay-bandwidth limitations that worsen as the size of the object to be cloaked increases relative to the wavelength, using a simple model ...
Optical force on a cylindrical cloak under arbitrary wave illumination
The optical force distribution in the cylindrical cloak under arbitrary incident waves is presented. We show that on the inner surface of the cloak both the induced surface currents and polarization charges interact with ...
Iterative nonlinear beam propagation using Hamiltonian ray tracing and Wigner distribution function
We present an iterative method for simulating beam propagation in nonlinear media using Hamiltonian ray tracing. The Wigner distribution function of the input beam is computed at the entrance plane and is used as the initial ...
Cylindrical cloaking at oblique incidence with optimized finite multilayer parameters
We propose multilayer cylindrical invisibility cloaks that are optimized for oblique incidences through a combination of analytic formalism of scattering and genetic optimization. We show that by using only four layers of ...