Researchers in Germany have succeeded in controlling and monitoring strongly accelerated electrons from nano-spheres with extremely short and intense laser pulses. When intense laser light interacts with electrons in nanoparticles that consist of many million individual atoms, these electrons can be released and strongly accelerated. Such an effect in nano-spheres of silica was recently observed by an international team of researchers. The researchers report how strong electrical fields (near-fields) build up in the vicinity of the nanoparticles and release electrons. Driven by the near-fields and collective interactions of the charges resulting from ionization by the laser light, the released electrons are accelerated, such that they can by far exceed the limits in acceleration that were observed so far for single atoms. The exact movement of the electrons can be precisely controlled via the electric field of the laser light. The new insights into this light-controlled process can help to generate...
- Laser heating -- new light cast on electrons heated to several billion degreesMon, 21 Nov 2011, 16:40:45 EST
- Laser pulses control single electrons in complex moleculesTue, 1 Sep 2009, 14:15:52 EDT
- Simulating tomorrow's accelerators at near the speed of lightTue, 22 Mar 2011, 11:35:17 EDT
- BELLA laser achieves world record power at 1 pulse per secondFri, 27 Jul 2012, 14:05:22 EDT
- Nano-sandwich triggers novel electron behaviorTue, 5 May 2009, 9:44:08 EDT