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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 20, Iss. 1 — Jan. 1, 2003
  • pp: 132–137

Generation of mega-electron-volt electron beams by an ultrafast intense laser pulse

Xiaofang Wang, Ned Saleh, Mohan Krishnan, Haiwen Wang, Sterling Backus, Margaret Murnane, Henry Kapteyn, Donald Umstadter, Quandong Wang, and Baifei Shen  »View Author Affiliations

JOSA B, Vol. 20, Issue 1, pp. 132-137 (2003)

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Mega-electron-volt (MeV) electron emission from the interaction of an ultrafast (τ∼29 fs), intense (>1018 W/cm2) laser pulse with underdense plasmas has been studied. A beam of MeV electrons with a divergence angle as small as 1° is observed in the forward direction, which is correlated with relativistic filamentation of the laser pulse in plasmas. A novel net-energy-gain mechanism is proposed for electron acceleration resulting from the relativistic filamentation and beam breakup. These results suggest an approach for generating a beam of femtosecond, MeV electrons at a kilohertz repetition rate with a compact ultrafast intense laser system.

© 2003 Optical Society of America

OCIS Codes
(270.6620) Quantum optics : Strong-field processes
(320.7120) Ultrafast optics : Ultrafast phenomena
(350.4990) Other areas of optics : Particles

Xiaofang Wang, Ned Saleh, Mohan Krishnan, Haiwen Wang, Sterling Backus, Margaret Murnane, Henry Kapteyn, Donald Umstadter, Quandong Wang, and Baifei Shen, "Generation of mega-electron-volt electron beams by an ultrafast intense laser pulse," J. Opt. Soc. Am. B 20, 132-137 (2003)

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