Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Laser Creates First EUV Attosecond Pulses
Apr 2012
PARIS, April 9, 2012 — For the first time, incredibly fast laser pulses could make it possible to observe ultrarapid phenomena such as the motion of electrons in matter.

Laboratoire d'Optique Appliquèe (LOA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) and Laboratoire pour l'Utilisation des Lasers Intenses (Ecole Polytechnique/UPMC) collaborated on a technique that produces attosecond pulses in the extreme ultraviolet (EUV) wavelengths in a reproducible way.

The experimental setup. (Image © Antonin Borot)

Events such as ionization, or an electron moving from one energy level to another, occur at the order of attoseconds (10-18 seconds, or a billionth of a billionth of a second). To see an event like this happen, and to study the path and evolution of the particle, you need to produce light pulses at that order of magnitude, something akin to a camera taking photofinishes at a race.

To create such a light pulse, the team, led by LOA, created a superefficient light source that could deliver 1000 identical femtosecond (10-15 seconds) long pulses per second. The researchers focused the 1-μm-wide beam on a silicon target. The intensity of the beam turned the solid silica into plasma of the same density. The laser excited the electrons within the plasma, causing them to emit EUV radiation that can be recorded.

Electronic trajectories and EUV radiation induced by the laser field. (Image ©Antonin Borot)

The team plans to continue to refine its laser source to create even faster radiation in the shorter X-ray domain of the spectrum.

A paper on the work is available online through Nature Physics.

For more information, visit:

attosecondCEACommissariat à lénergie atomique et aux énergies alternativesEcole Polytechnique/UPMCEuropefemtolaserFranceLaboratoire dOptique AppliquèeLaboratoire pour lUtilisation des Lasers IntensesLOAopticsParisResearch & Technologylasers

Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2019 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.