C Rechatin et al 2009 New J. Phys. 11 013011 doi:10.1088/1367-2630/11/1/013011
Quasi-monoenergetic electron beams produced by colliding cross-polarized laser pulses in underdense plasmas
C Rechatin1, J Faure1, A Lifschitz1,2, X Davoine3, E Lefebvre3 and V Malka1,4
Show affiliationsThe interaction of two laser pulses in an underdense plasma has been proven to be able to inject electrons into plasma waves, thus providing a stable and tunable source of electrons. Whereas previous works focused on the 'beatwave' injection scheme in which two lasers with the same polarization collide in a plasma, this present paper studies the effect of polarization and more specifically the interaction of two colliding cross-polarized laser pulses. It is shown both theoretically and experimentally that electrons can also be preaccelerated and injected by the stochastic heating occurring at the collision of two cross-polarized lasers and thus, a new regime of optical injection is demonstrated. It is found that injection with cross-polarized lasers occurs at higher laser intensities.
- PACS
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52.38.Kd Laser-plasma acceleration of electrons and ions
- Subjects
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Accelerators, beams and electromagnetism
- Dates
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Issue 1 (January 2009)
Received 6 August 2008
Published 7 January 2009
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Quasi-monoenergetic electron beams produced by colliding cross-polarized laser pulses in underdense plasmas
C Rechatin et al 2009 New J. Phys. 11 013011
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