Hannover 2013 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 39: Quantum effects: Light scattering and propagation
Q 39.4: Vortrag
Mittwoch, 20. März 2013, 14:45–15:00, F 342
Photon-photon scattering in collisions of laser pulses — •Ben King1 and Christoph H. Keitel2 — 1Ludwig-Maximilians-Universität, Theresienstraße 37, 80333 München, Germany — 2Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg
Motivated by recent interest in building higher-intensity laser facilities [1, 2], we investigate the possibility of measuring the predicted phenomenon of elastic vacuum photon-photon scattering with a single 10 PW optical laser beam split into two Gaussian-focused pulses with arbitrary impact geometry [3], extending previous work [4-5]. By calculating the number of photons scattered into regions of high signal-to-noise ratio, we find that the elastic process should be measurable with such a set-up, and if these pulses are sub-cycle, the frequency-shifting, vacuum four-wave mixing process could be measurable too.
[1] http://www.extreme-light-infrastructure.eu, Extreme Light Infrastructure (2012)
http://www.xcels.iapras.ru, eXawatt Center for Extreme Light Studies (2012)
B. King and C. H. Keitel, New J. Phys. 14, 103002 (2012)
[4] B. King, A. Di Piazza and C. H. Keitel, Nature Photon. 4, 92–94 (2010)
A. Di Piazza, K. Z. Hatsagortsyan and C. H. Keitel, Phys. Rev. Lett. 97, 083603 (2006)