Cornell University is planning to build an EnergyRecovery Linac (ERL) X-ray facility. In this ERL design, a 5 GeV superconducting linear accelerator extends the CESR ring. Currently CESR is used for the Cornell High Energy Synchrotron Source (CHESS). The very small electron-beam emittances would produce an x-ray source that is significantly better than any existing storage-ring light source. Ho...

Glasses containing metallic nanoparticles are promising materials for technological applications in optics and photonics. Although several methods are available to generate nanoparticles in glass, only femtosecond lasers allow controlling it three-dimensionally. In this direction, the present work investigates the generation of copper nanoparticles on the surface and in the bulk of a borosilica...

Transmission electron microscopy has been a promising candidate for mapping atomic orbitals for a long time. Here, we explore its capabilities by a first-principles approach. For the example of defected graphene, exhibiting either an isolated vacancy or a substitutional nitrogen atom, we show that three different kinds of images are to be expected, depending on the orbital character. To judge t...

Harmonics m the radiation of a free electron laser are useful for extending the range of tuning, may originate in spontaneous or parametric processes, and can take part m stimulated emission or amplification . These mechanisms exhibit interesting analogies with those of nonlinear optics . Apart from the well known nonparametric gam analogous to stimulated Brilloum scattering, they include third...

Total-reflection mirror devices for X-ray free-electron laser focusing are discussed in terms of optical design, mirror-fabrication technology, a wavefront diagnosis method and radiation-damage testing, as a review of the present status of the focusing optics at the SPring-8 angstrom compact free-electron laser (SACLA). Designed beam sizes of 1 µm and 50 nm, and spot sizes almost matching predi...

The electron optics of a 90 degree spherical deflecting analyzer (SDA-90) is investigated with an imaging matrix formalism. As a preanalyzer in the UTAneutrino experiment, high transmission and reasonable energy resolution are the choices of optimization. The magnification of the source through the analyzer plays the key role in determining the energy resolution. The imaging matrix approach pro...

A numerical technique which incorporates the nonlinear optics of anisotropic crystals into a particle-in-cell framework is described. The model is useful for simulating interactions between crystals, ultra-short laser pulses, intense relativistic electron bunches, plasmas, or any combination thereof. The frequency content of the incident and scattered radiation is limited only by the resolution...

PT-Symmetry is one of the interesting topics in quantum mechanics and optics. One of the demonstration of PT-Symmetric effects in optics is appeared in the nonlinear directional coupler (NLDC). In the paper we numerically investigate the stability of temporal bright solitons propagate in a PT-Symmetric NLDC by considering gain in bar and loss in cross. By using the analytical solutions of pertu...

Imaging dynamical processes at interfaces and on the nanoscale is of great importance throughout science technology. While light-optical imaging techniques often cannot provide necessary spatial resolution, electron-optical damage specimen cause dose-induced artefacts. Here, Optical Near-field Electron Microscopy (ONEM) proposed, an technique that combines non-invasive probing with light, a hig...

Scalar theory of quantum electron beam optics, at the single-particle level, derived from Dirac equation using a Foldy–Wouthuysen-like transformation technique is considered. Round magnetic lenses with Glaser and power law models for axial field B(z) are studied. Paraxial propagator model lens obtained in terms well known fundamental solutions its paraxial motion. In case equations, by solving ...