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4 papers · 1 filter
The interaction of intense ultrashort laser pulses with cryogenic He jets
M. Shihab, T. Bornath, R. Redmer
We study the interaction of intense ultrashort laser pulses with cryogenic He jets using 2d/3v relativistic Particle-in-Cell simulations (XOOPIC). Of particular interest are laser…
On symmetries of generalized Robertson-Walker Space-times and applications
H. K. El-Sayied, S. Shenawy, N. Syied
The purpose of the present article is to study and characterize sev- eral types of symmetries of generalized Robertson-Walker space-times. Con- formal vector fields, curvature and…
Spatial beam self-cleaning in multimode fiber
Katarzyna Krupa, Alessandro Tonello, Badr M. Shalaby +5
Multimode optical fibres are enjoying a renewed attention, boosted by the urgent need to overcome the current capacity crunch of single-mode fibre systems and by recent advances in…
Observation of geometric parametric instability induced by the periodic spatial self-imaging of multimode waves
Katarzyna Krupa, Alessandro Tonello, Alain Barthélémy +5
Spatio-temporal mode coupling in highly multimode physical systems permits new routes for exploring complex instabilities and forming coherent wave structures. We present here the…