Laser-energy transfer and enhancement of plasma waves and electron beams by interfering high-intensity laser pulses

P. Zhang, N. Saleh, S. Chen, Z. M. Sheng, Donald P Umstadter

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The effects of interference due to crossed laser beams were studied experimentally in the high-intensity regime. Two ultrashort (400 fs), high-intensity ([Formula presented] and [Formula presented]) and [Formula presented] wavelength laser pulses were crossed in a plasma of density [Formula presented]. Energy was observed to be transferred from the higher-power to the lower-power pulse, increasing the amplitude of the plasma wave propagating in the direction of the latter. This results in increased electron self-trapping and plasma-wave acceleration gradient, which led to an increased number of hot electrons (by [Formula presented]) and hot-electron temperature (by [Formula presented]) and a decreased electron-beam divergence angle (by [Formula presented]), as compared with single-pulse illumination. Simulations reveal that increased stochastic heating of electrons may have also contributed to the electron-beam enhancement.

Original languageEnglish (US)
JournalPhysical Review Letters
Volume91
Issue number22
DOIs
StatePublished - Jan 1 2003

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plasma waves
high power lasers
energy transfer
electron beams
augmentation
pulses
lasers
hot electrons
divergence
electrons
illumination
trapping
laser beams
electron energy
interference
gradients
heating
wavelengths
simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Laser-energy transfer and enhancement of plasma waves and electron beams by interfering high-intensity laser pulses. / Zhang, P.; Saleh, N.; Chen, S.; Sheng, Z. M.; Umstadter, Donald P.

In: Physical Review Letters, Vol. 91, No. 22, 01.01.2003.

Research output: Contribution to journalArticle

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