Rostock 2019 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 33: Interaction with strong and short laser pulses
A 33.6: Poster
Donnerstag, 14. März 2019, 16:15–18:15, S Fobau Physik
Observation of the Dynamics of a Laser Wakefield using Few-cycle Laser Pulses at Short-wave Infrared Wavelengths (SWIR) — •Mingzhuo Li1, Yinyu Zhang1,2, Carola Zepter1,2, Philipp Wustelt1,2, Slawomir Skruszewicz1,2, A. Max Sayler1,2, Alexander Sävert1,2, Malte C. Kaluza1,2, and Gerhard G. Paulus1,2 — 1Institute of Optics and Quantum Electronics, Jena, Germany — 2Helmholtz Insitute, Jena, Germany
High-energy particles from accelerators are important tools for probing fundamental structure of matter, such as elementary particles, atoms, molecules and cells. Conventional accelerator facilities, limited by the radio-frequency (rf) technology, require space of kilometers and cost over $ 1 billion. Laser wakefield accelerator (LWFA), a table-top accelerator technology, which is based on charged particles propagation through relativistic wakes produced by intense laser beams can accelerate particles to several GeV [1]. In order to control the acceleration process inside the plasma, it is essential to know the dynamics of the wakefield. The direct observation of the dynamics of the laser wakefield is achieved by using the transverse shadowgraphy, which is probed by few-cycle pulses at 810 nm [2]. Increasing the wavelength of probe pulses but keeping the pulse length in few-cycle regime can probe plasmas with lower densities, which will increase the spatial resolution and the sensitivity. Here, we report on the high-resolution observation of the dynamics of a laser wakefield using few-cycle pulses at SWIR (1800 nm). [1] W. P. Leemans, et. al., Nat. Phys. 2, 696-699 (2006). [2] A. Sävert, et. al., Phys. Rev. Lett. 115, 055002 (2015).