Discovered in 1813, the conoscopic interference pattern observed due to light propagating through a crystal, kept between crossed polarizers, shows isochromates and isogyres, respectively containing information about the dynamic and geometric phase acquired by the beam. We propose and demonstrate a closed-fringe Fourier analysis method to disentangle the isogyres from the isochromates, leading ...

In the present paper we study the geometric properties of the multivalued solutions to the eikonal equation and we give the appropriate classification theorems. Our motivation stems from geometrical optics for approximating high frequency waves in stratified media. We consider the case of a fixed Hamiltonian imposed by the medium, and we present the geometric framework that describes the geomet...

Optics played a key role in the discovery of geometric phase. Once again, it joins the journey of exploring topological physics, bringing us bosonic topological states of one-way waveguides, Weyl points and a single surface Dirac cone. At the interfaces of topological photonic materials, the propagation of photons is protected against disorder by the momentum-space topologies in the bulk. Topol...

Sample-induced image-degradation remains an intricate wave-optical problem in light-sheet microscopy. Here we present biobeam, an open-source software package that enables to simulate operational light-sheet microscopes by combining data from 10–10 multiplexed and GPU-accelerated point-spread-function calculations. The wave-optical nature of these simulations leads to the faithful reproduction ...

We show that a modified form of the semiclassical coupled wave theory gives a reliable description of wave propagation in a 1D photonic crystal with complex refractive index. The key idea of the theory remains the same: to include both variable amplitudes and variable (geometric-optics) phases in the counterpropagating coupled waves within the photonic crystal. Here, however, the phases become ...

Atmospheric tomography is a prerequisite step before wavefront perturbations can be corrected in Multi Conjucate Adaptive Optics (MCAO) systems. Recently, the use of a Landweber-Kaczmarz iteration has been proposed to solve the tomography problem. However, due to the geometric partitioning of the update steps in this method, discontinuities in the solution appear that are physically implausible...

A fundamental problem in image analysis is to understand the nature of the computations and mechanisms that provide information about the material properties of surfaces. Information about a surface’s 3D shape, optics, illumination field, and atmospheric conditions are conflated in the image, which must somehow be disentangled to derive the properties of surfaces. It was recently suggested that...

Large sandwich radomes are widely used for radar antennas because of the desired some characteristics. They are constructed by connecting small panels for the restrictions on manufacture. These connection parts yield undesired scattered waves and generate higher sidelobes. We present a novel method to overcome this problem by optimizing the radome geometric design. The scattering characteristic...