Related topics: light

Mixing laser beams and X-ray beams

Unlike fictional laser swords, real laser beams do not interact with each other when they cross—unless the beams meet within a suitable material allowing for nonlinear light-matter interaction. In such a case, wave mixing ...

Researchers create flat magic window with liquid crystals

For the first time, researchers have used liquid crystals to create a flat magic window—a transparent device that produces a hidden image when light shines on it. The technology represents a new twist on a very old light ...

Researchers demonstrate label-free super-resolution microscopy

Researchers have developed a new measurement and imaging approach that can resolve nanostructures smaller than the diffraction limit of light without requiring any dyes or labels. The work represents an important advance ...

Tomographic measurement of dielectric tensors

A research team reported the direct measurement of dielectric tensors of anisotropic structures including the spatial variations of principal refractive indices and directors. The group also demonstrated quantitative tomographic ...

Researchers design holographic lenses based on plasma

Holograms are three-dimensional (3D) images produced by interfering beams of light that reflect physical objects or photographs. In recent years, they were introduced in a variety of settings, for instance to enhance employee ...

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