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Wong LJ, Hong KH, Carbajo S, et al. Laser-Induced Linear-Field Particle Acceleration in Free Space. Sci Rep. 2017;7(1):11159doi: 10.1038/s41598-017-11547-9.
Wong, L. J., Hong, K. H., Carbajo, S., Fallahi, A., Piot, P., Soljačić, M., Joannopoulos, J. D., Kärtner, F. X., & Kaminer, I. (2017). Laser-Induced Linear-Field Particle Acceleration in Free Space. Scientific reports, 7(1), 11159. https://doi.org/10.1038/s41598-017-11547-9
Wong, Liang Jie, et al. "Laser-Induced Linear-Field Particle Acceleration in Free Space." Scientific reports vol. 7,1 (2017): 11159. doi: https://doi.org/10.1038/s41598-017-11547-9
Wong LJ, Hong KH, Carbajo S, Fallahi A, Piot P, Soljačić M, Joannopoulos JD, Kärtner FX, Kaminer I. Laser-Induced Linear-Field Particle Acceleration in Free Space. Sci Rep. 2017 Sep 11;7(1):11159. doi: 10.1038/s41598-017-11547-9. PMID: 28894271; PMCID: PMC5593863.
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Sci Rep. 2017 Sep 11;7(1):11159. doi: 10.1038/s41598-017-11547-9.

Laser-Induced Linear-Field Particle Acceleration in Free Space.

Scientific reports

Liang Jie Wong, Kyung-Han Hong, Sergio Carbajo, Arya Fallahi, Philippe Piot, Marin Soljačić, John D Joannopoulos, Franz X Kärtner, Ido Kaminer

Affiliations

  1. Department of Mathematics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, 02139, Massachusetts, USA. [email protected].
  2. Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, Innovis, 138634, Singapore. [email protected].
  3. Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, 02139, Massachusetts, USA.
  4. Stanford University and SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA, 94025, USA.
  5. Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron, Notkestraße 85, D-22607, Hamburg, Germany.
  6. Department of Physics and Northern Illinois Center for Accelerator & Detector Development, Northern Illinois University, DeKalb, IL, 60115, USA.
  7. Fermi National Accelerator Laboratory, Batavia, IL, 60510, USA.
  8. Department of Physics, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, 02139, Massachusetts, USA.
  9. Hamburg Center for Ultrafast Imaging, Luruper Chaussee 149, 22607, Hamburg, Germany.
  10. Department of Electrical Engineering, Technion-Israel Institute of Technology, 32000, Haifa, Israel.

PMID: 28894271 PMCID: PMC5593863 DOI: 10.1038/s41598-017-11547-9

Abstract

Linear-field particle acceleration in free space (which is distinct from geometries like the linac that requires components in the vicinity of the particle) has been studied for over 20 years, and its ability to eventually produce high-quality, high energy multi-particle bunches has remained a subject of great interest. Arguments can certainly be made that linear-field particle acceleration in free space is very doubtful given that first-order electron-photon interactions are forbidden in free space. Nevertheless, we chose to develop an accurate and truly predictive theoretical formalism to explore this remote possibility when intense, few-cycle electromagnetic pulses are used in a computational experiment. The formalism includes exact treatment of Maxwell's equations and exact treatment of the interaction among the multiple individual particles at near and far field. Several surprising results emerge. We find that electrons interacting with intense laser pulses in free space are capable of gaining substantial amounts of energy that scale linearly with the field amplitude. For example, 30 keV electrons (2.5% energy spread) are accelerated to 61 MeV (0.5% spread) and to 205 MeV (0.25% spread) using 250 mJ and 2.5 J lasers respectively. These findings carry important implications for our understanding of ultrafast electron-photon interactions in strong fields.

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