Metastable states of floating crystals

A research team led by the GRASP—Group of Research and Applications in Statistical Physics—at the University of Liège (Belgium), demonstrates how to manipulate the mesh, shape and symmetry of floating crystals by wandering, ...

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 ...

New compact terahertz laser with 120 frequencies

Researchers have taken a major step towards bringing terahertz frequencies out of their hard-to-reach region of the electromagnetic spectrum and into everyday applications. In a new paper, the researchers demonstrate a first-of-its-kind ...

Creating frequency combs in microresonators

For the first time, scientists were able to create ultrashort dark and bright light pulses that are linked together in tiny glass rings called microresonators. Each of the flashes consist of many different, precisely defined ...

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