LLE Talks: Towards the detection of vacuum birefringence

The Laserlab-Europe Talk “Towards the detection of vacuum birefringence” by Gerhard Paulus (Helmholtz Institute Jena, Germany) has taken place on 26 April 2023.

Strong electromagnetic fields polarize vacuum such that it becomes birefringent. Not surprisingly, the effect is tiny, even if petawatt-class lasers are used for inducing the effect and X-ray lasers for probing it. Quite obviously, the performance of the required X-ray polarimeters is the decisive bottleneck: an extinction ratio of 1011 or better is required. Gerhard Paulus and his team have been working since more than 10 years to remove the bottleneck. He will report how close they have come to the feasibility of a promising demonstration of vacuum birefringence. He will also explain how to design a reasonable experiment and which mistakes to avoid.

--
The Laserlab-Europe Talks consist of a series of online seminars and panel discussions proposed and organised by our community on specific topics (thematic or research-specific) and provide a platform for regular information exchange and knowledge sharing.

The talks take place on a Wednesday afternoon at 16h00 CET each month and are open to all interested parties, from PhD students to experts in the field and industrial and medical partners as appropriate.

#laser #xray #polarization #vacuum

For more information: https://www.laserlab-europe.eu/events...

Links to further YouTube channels:
‪@HelmholtzTV‬
‪@UniJena‬