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Quantum dot ring lasers emit colored light

Researchers have designed a new type of laser called a quantum dot ring laser that emits red, orange, and green light. The different colors are emitted from different parts of the quantum dot—red from the core, green from ...

date19 hours ago in Nanophysics feature
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Accelerating light beams in curved space

By shining a laser along the inside shell of an incandescent light bulb, physicists have performed the first experimental demonstration of an accelerating light beam in curved space. Rather than moving along a geodesic trajectory ...

dateJan 12, 2018 in General Physics feature
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Exploring alien worlds with lasers

In everyday life we look and touch things to find out what they are made of. A powerful scientific technique does the same using lasers – and in two years' time it will fly in space for the first time.

dateJan 10, 2018 in Space Exploration
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