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MUST2022 Conference- a great success!
New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson
FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”
Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science
New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science
International Day of Women and Girls in Science- SSPh asked female scientists about their experiences
New scientific highlight- by MUST PIs Milne, Standfuss and Schertler
EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL
Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021
Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis
NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules
#NCCRWomen- NCCR MUST celebrates 50 years women’s right to vote in Switzerland

Comsol simulation of high field THz focusing

Date Do, 08.05.2014 - Do, 08.05.2014
Time 10.15
Speaker Yannik Waeber, Institute of Applied Physics, University of Bern
Location Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern
Program To facilitate nonlinear THz experiments it is essential to reach the highest possible focused intensities, i.e. the smallest possible spot size. The THz pulses are single-cycle pulses, therefore, they cover a rather large spectral bandwidth (100μm - 3000μm). This has two important consequences. First, the dimensions of the optical elements are comparable in size to the THz wavelengths and, second, any achromatic element will have a negative effect.
Through dedicated COMSOL simulations we investigate a number of important questions:
1) Is the paraxial approximation, e.g. Gaussian beams, still a useful description?
2) Can we assume an almost linear polarization in the focal plane?
3) What is the best focusing system given the different THz sources used in the lab?
4) Focusing versus imaging.
5) How careful do these systems have to be aligned?
Download (75 KB)
(75 KB)
Link www.iap.unibe.ch
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