GeV-scale accelerators driven by plasma-modulated pulses from kilohertz lasers
| Autor: | Jakobsson, O., Hooker, S. M., Walczak, R. |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Physical Review Letters Vol. 127, No. 18 (2021) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.127.184801 |
| Popis: | We describe a new approach for driving GeV-scale plasma accelerators with long laser pulses. We show that the temporal phase of a long, high-energy driving laser pulse can be modulated periodically by co-propagating it with low-amplitude plasma wave driven by a short, low-energy seed pulse. Compression of the modulated driver by a dispersive optic generates a train of short pulses suitable for resonantly driving a plasma accelerator. Modulation of the driver occures via well-controlled linear process, as confirmed by good agreement between particle-in-cell (PIC) simulations and an analytic model. PIC simulations demonstrate that a 1.7 J, 1 ps driver and a 140 mJ, 40 fs seed pulse can accelerate electrons to energies of 0.65 GeV in a plasma channel with an axial density of 2.5 x 10$^{17}$ cm$^{-3}$. This work opens a route to high-repetition-rate, GeV-scale plasma accelerators driven by thin-disk lasers, which can provide joule-scale, picosecond-duration laser pulses at multi-kilohertz repetition rates and high wall-plug efficiencies. Comment: 13 pages, 7 figures (including Supplemental Material). Published as a letter by PRL |
| Databáze: | arXiv |
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