Related topics: light · laser · electrons · molecules · atoms

A milestone in petahertz electronics

In a semiconductor, electrons can be excited by absorbing laser light. Advances in the past decade have enabled measuring this fundamental physical mechanism on timescales below a femtosecond (10-15 s). Now, physicists at ...

Un-mixing using lasers to make new crystals

Scientists have managed to separate two liquids in a mixture using a laser, which they claim will lead to new ways of manipulating matter and creating crystals for industry.

Shedding high-power laser light on the plasma density limit

The interaction of high-power laser light sources with matter has given rise to numerous applications including; fast ion acceleration; intense X-ray, gamma-ray, positron and neutron generation; and fast-ignition-based laser ...

Better than holograms: A new 3-D projection into thin air

One of the enduring sci-fi moments of the big screen—R2-D2 beaming a 3-D image of Princess Leia into thin air in "Star Wars"—is closer to reality thanks to the smallest of screens: dust-like particles.

Scientists achieve high power with new smaller laser

An international team of scientists has produced the first high-powered, randomly polarised laser beam with a "Q switch" laser, which typically emits pulses of light so brief that they're measured in nanoseconds. Lasers are ...

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