Tropical Morpho butterfl ies are known for their iridescence. [ 1 ] Extensive research has been dedicated to analyzing the nanoscale architecture of Morpho butterfl y wings to understand their brilliant blue or white–purple iridescence The wing scales of Morpho butterfl ies contain 3D nanostructures that produce blue iridescent colors. Incident light is diffracted from multilayered nanostructur...

The genesis of this paper lies in theoretical questions in geometrical diffraction theory where a central role is played by the systems of rays passing through a boundary of an obstacle ~aperture! ~cf. Refs. 1,2!. It is explained in Refs. 1,3,4 why the proper isotropic submanifolds of cotangent boundles ~phase spaces! do occur in geometrical diffraction and why the symmetry group of these objec...

Second-order nonlinear optical diffraction by standing acoustic waves in a crystalline plate is theoretically investigated. A detailed analysis of the polarization state of the second-harmonic light diffracted by both longitudinal and transversal acoustic waves is carried out. It is shown that longitudinal standing acoustic waves only allow p-polarized nonlinear optical diffraction, irrespectiv...

The Physical Optic (PO) surface integral has been expressed in its basic components by the unique Modified Edge Representation (MER) currents line integration definition. The Scatterer Geometrical Optics (SGO) component field is associated with the Stationary Phase Point (SPP) bellowing to the illuminated region of the scatterer and the diffracted field component with its illuminated boundary. ...

The diffraction of 100-fs pulses from the static gratings of photorefractive quantum wells (QW’s) produces diffracted pulses that are nearly transform-limited, despite the strong dispersion near the quantum-confined excitonic transitions. This quality makes the QW’s candidates for use in femtosecond pulse shaping, although the currently limited bandwidth of the quantum-confined excitonic transi...

In recent years, there has been renewed interest in problems of diffraction and radiation of ocean waves around structures, in relation to “green” power generation by Oscillating Water Column (OWC) devices. In this paper we present a first-order analytical solution for the diffraction of ocean waves around a hollow cylindrical shell structure suspended in an ocean of finite depth. By revisiting...

Surface Plasmon Polaritons (SPPs) are confined solutions of Maxwell’s equations which propagate at the interface between a metal and a dielectric medium and have origin from the coupling of the electromagnetic field with electron-plasma density oscillations inside the metal [1]. SPPs are localized in the direction perpendicular to the interface: field intensity decays exponentially from the sur...

Features of forward diffracted Parametric X-Radiation (PXR) were investigated at experiments with the 855 MeV electron beam of the Mainz Microtron MAMI employing a 410 μm thick tungsten single crystal. Virtual photons from the electron field are diffracted by the (101̄) plane at a Bragg angle of 3.977. Forward emitted radiation was analyzed at an energy of 40 keV with the (111) lattice planes of...

[2] The impedance boundary condition [Senior and Volakis, 1995] is a convenient tool for simulating the material properties of a surface. For most materials the surface impedance is a scalar, but there are materials whose properties are anisotropic for which a tensor impedance is required. The simplest cases are those for which the tensors are diagonal but recent work with metamaterials has mad...

The paper is devoted to theoretical and experimental investigations of Lamb wave excitation and propagation in multilayered carbon fiber-reinforced plastic plates with obstacles. The theoretical modeling is performed in the context of general linear elasticity for three-dimensional laminate anisotropic media. It is based on the integral and asymptotic representations in terms of Green’s matrix ...