Laser wakefield acceleration with mid-IR laser pulses

Optics Letters
D WoodburyH M Milchberg

Abstract

We report on, to the best of our knowledge, the first results of laser plasma wakefield acceleration driven by ultrashort mid-infrared (IR) laser pulses (λ=3.9  μm, 100 fs, 0.25 TW), which enable near- and above-critical density interactions with moderate-density gas jets. Relativistic electron acceleration up to ∼12  MeV occurs when the jet width exceeds the threshold scale length for relativistic self-focusing. We present scaling trends in the accelerated beam profiles, charge, and spectra, which are supported by particle-in-cell simulations and time-resolved images of the interaction. For similarly scaled conditions, we observe significant increases in the accelerated charge, compared to previous experiments with near-infrared (λ=800  nm) pulses.

References

Apr 8, 2010·The Review of Scientific Instruments·A BuckU Schramm
Jan 15, 2011·Physical Review Letters·Tatsufumi NakamuraMasaki Kando
Aug 3, 2011·Optics Letters·Giedrius AndriukaitisHenry C Kapteyn
Mar 12, 2013·Physical Review Letters·F SyllaV Tikhonchuk
Nov 21, 2015·Physical Review Letters·A J GoersH M Milchberg
Jan 13, 2017·Optics Letters·F SalehiH M Milchberg

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Citations

Mar 29, 2020·Light, Science & Applications·Xing-Long ZhuJie Zhang
Nov 7, 2019·Optics Express·M BridgerU Bovensiepen
Jan 18, 2020·Physical Review Letters·J DéchardL Bergé
Mar 21, 2021·Light, Science & Applications·Xing-Long ZhuJie Zhang

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