News tagged with ultrashort laser pulse

Measuring time without a clock

EPFL scientists have been able to measure the ultrashort time delay in electron photoemission without using a clock. The discovery has important implications for fundamental research and cutting-edge technology.

dateFeb 08, 2017 in General Physics
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With great power comes great laser science

It is a very unusual kind of laser: researchers at the photonics institute at TU Wien (Vienna) have built a device which emits ultrashort flashes of infrared light with extremely high energy. "It is very hard to combine these ...

dateSep 13, 2016 in Optics & Photonics
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New technique opens up advanced solar cells

In a photovoltaic cell, light generates opposite charges in the active layer. The charges must then be separated as quickly as possible to keep them from recombining. Positive charges are driven by a built-in electric field ...

dateSep 02, 2016 in Materials Science
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