Instantly turning a material from opaque to transparent, or from a conductor to an insulator, is no longer the stuff of ...

Recent advancements in attosecond science have provided the tools necessary to resolve the ultrafast time delays involved in ...

A new gating scheme based on polarization control and second-harmonic generation is greatly simplifying the production of isolated attosecond pulses. Attosecond pulses — flashes of light lasting ...

For several years now, scientists have been using lasers to control the properties of matter at extremely fast rates: during one optical cycle of a light wave. But because these changes occur on the ...