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Title: Sub-cycle dynamics in relativistic nanoplasma acceleration

Abstract

The interaction of light with nanometer-sized solids provides the means of focusing optical radiation to sub-wavelength spatial scales with associated electric field enhancements offering new opportunities for multifaceted applications. We utilize collective effects in nanoplasmas with sub-two-cycle light pulses of extreme intensity to extend the waveform-dependent electron acceleration regime into the relativistic realm, by using 106 times higher intensity than previous works to date. Through irradiation of nanometric tungsten needles, we obtain multi-MeV energy electron bunches, whose energy and direction can be steered by the combined effect of the induced near-field and the laser field. We identified a two-step mechanism for the electron acceleration: (i) ejection within a sub-half-optical-cycle into the near-field from the target at >TVm -1 acceleration fields, and (ii) subsequent acceleration in vacuum by the intense laser field. Our observations raise the prospect of isolating and controlling relativistic attosecond electron bunches, and pave the way for next generation electron and photon sources.

Authors:
 [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1]; ORCiD logo [3];  [1]; ORCiD logo [4]
  1. Max-Planck-Inst. für Quantenoptik, Garching (Germany); Ludwig-Maximilian-Univ. München, Garching (Germany)
  2. Forschungszentrum Jülich, Jülich (Germany)
  3. Forschungszentrum Jülich, Jülich (Germany); Katholieke Univ. Leuven, Heverlee (Belgium)
  4. Max-Planck-Inst. für Quantenoptik, Garching (Germany); Umeå Univ., Umeå (Sweden)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); European Union (EU)
OSTI Identifier:
1560596
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Cardenas, D. E., Ostermayr, T. M., Di Lucchio, L., Hofmann, L., Kling, M. F., Gibbon, P., Schreiber, J., and Veisz, L. Sub-cycle dynamics in relativistic nanoplasma acceleration. United States: N. p., 2019. Web. doi:10.1038/s41598-019-43635-3.
Cardenas, D. E., Ostermayr, T. M., Di Lucchio, L., Hofmann, L., Kling, M. F., Gibbon, P., Schreiber, J., & Veisz, L. Sub-cycle dynamics in relativistic nanoplasma acceleration. United States. doi:10.1038/s41598-019-43635-3.
Cardenas, D. E., Ostermayr, T. M., Di Lucchio, L., Hofmann, L., Kling, M. F., Gibbon, P., Schreiber, J., and Veisz, L. Mon . "Sub-cycle dynamics in relativistic nanoplasma acceleration". United States. doi:10.1038/s41598-019-43635-3. https://www.osti.gov/servlets/purl/1560596.
@article{osti_1560596,
title = {Sub-cycle dynamics in relativistic nanoplasma acceleration},
author = {Cardenas, D. E. and Ostermayr, T. M. and Di Lucchio, L. and Hofmann, L. and Kling, M. F. and Gibbon, P. and Schreiber, J. and Veisz, L.},
abstractNote = {The interaction of light with nanometer-sized solids provides the means of focusing optical radiation to sub-wavelength spatial scales with associated electric field enhancements offering new opportunities for multifaceted applications. We utilize collective effects in nanoplasmas with sub-two-cycle light pulses of extreme intensity to extend the waveform-dependent electron acceleration regime into the relativistic realm, by using 106 times higher intensity than previous works to date. Through irradiation of nanometric tungsten needles, we obtain multi-MeV energy electron bunches, whose energy and direction can be steered by the combined effect of the induced near-field and the laser field. We identified a two-step mechanism for the electron acceleration: (i) ejection within a sub-half-optical-cycle into the near-field from the target at >TVm-1 acceleration fields, and (ii) subsequent acceleration in vacuum by the intense laser field. Our observations raise the prospect of isolating and controlling relativistic attosecond electron bunches, and pave the way for next generation electron and photon sources.},
doi = {10.1038/s41598-019-43635-3},
journal = {Scientific Reports},
number = 1,
volume = 9,
place = {United States},
year = {2019},
month = {5}
}

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