2020/05/29 by B. Miao, L. Feder, J. E. Shrock +2 · 1 citation
Physics and Astronomy · #physics.optics #physics.acc-ph
paper · pdf · doi:10.1103/physrevlett.125.074801
published as Phys. Rev. Lett. 125, 074801 (2020)
arxiv created 2020/05/29 · arxiv updated 2020/08/19
We demonstrate a new highly tunable technique for generating meter-scale low density plasma waveguides. Such guides can enable electron acceleration to tens of GeV in a single stage. Plasma waveguides are imprinted in hydrogen gas by optical field ionization induced by two time-separated Bessel beam pulses: The first pulse, a J0 beam, generates the core of the waveguide, while the delayed second pulse, here a J8 or J16 beam, generates the waveguide cladding. We demonstrate guiding of intense laser pulses over hundreds of Rayleigh lengths with on axis plasma densities as low as Ne0=5x1016 cm-3.