Researchers identify electron–phonon scattering as a leading cause of rapid coherence loss in semiconductors, helping explain declining high-harmonic generation efficiency.

There are several ways to boost a relatively low voltage by a factor of two or three, or even hundreds—but there are also ...

Researchers at TU Wien and UC San Diego have created the first continuously tunable X-ray harmonic source, sliding smoothly between frequencies like a fretless guitar.

DALI, China—For months, Ma Yongjian didn’t tell his parents where he was. Halfway through a master’s degree in computer science, the 27-year-old stopped going to class last year. Software engineering ...