Conjoined 'racetracks' make new optical device possible

When we last checked in with Caltech's Kerry Vahala three years ago, his lab had recently reported the development of a new optical device called a turnkey frequency microcomb that has applications in digital communications, ...

Atom-by-atom solvation recorded for the first time

A team of chemists and physicists at Aarhus University, in Denmark, working with a colleague from Universitat de Barcelona, in Spain, has recorded atom-by-atom solvation for the first time. In their study, published in the ...

X-ray lasers: Why does brighter mean darker?

When we illuminate something, we usually expect that the brighter the source we use, the brighter the resulting image will be. This rule also works for ultra-short pulses of laser light—but only up to a certain intensity. ...

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