Comparison of ponderomotive self-channeling and higher-order relativistic effects on intense laser beams propagating in plasma channels

Liu, Mingwei; Guo, Hong; Zhou, Bingju; Tang, Liqiang; Liu, Xiaojuan; Yi, Yougen

doi:10.1016/j.physleta.2005.12.008

Cited by 17 publications

(6 citation statements)

References 17 publications

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“…And Eq. (10) also directly reduces to those obtained in the weakly relativistic limit [9,[15][16][17][18][19] or in a uniform plasma [23], assuming I 0 1 or…”

Section: Analysis Of the Laser Wave Equationsupporting

confidence: 60%

“…(3) are usually distinguished with the effects of (linear) channel focusing, relativistic self-focusing, and ponderomotive selfchanneling [9,[13][14][15][16][17][18][19]. It is seen that the linear channel focusing term is always coupled with the relativistic nonlinearity through the common denominator γ , which represents the relativistic mass increase of electrons.…”

Section: Analysis Of the Laser Wave Equationmentioning

confidence: 99%

“…In the weakly relativistic limit, it may be convenient to expand the refractive index with a series of laser intensity [9,[13][14][15][16][17][18][19][20][21]. Then it is ready to analyze (and distinguish) the effects of relativistic self-focusing, ponderomotive self-channeling, and linear channel focusing.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Relativistic channel-coupling focusing enhanced nonlinear guiding of an intense laser beam in a plasma channel

Liu¹,

Li²,

Xu³

et al. 2009

Physics Letters A

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“…And Eq. (10) also directly reduces to those obtained in the weakly relativistic limit [9,[15][16][17][18][19] or in a uniform plasma [23], assuming I 0 1 or…”

Section: Analysis Of the Laser Wave Equationsupporting

confidence: 60%

Section: Analysis Of the Laser Wave Equationmentioning

confidence: 99%

See 1 more Smart Citation

Relativistic channel-coupling focusing enhanced nonlinear guiding of an intense laser beam in a plasma channel

Liu¹,

Li²,

Xu³

et al. 2009

Physics Letters A

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“…In Ref. [10] only the transverse ponderomotive nonlinearity was considered due to using a laser beam, while it also included the longitudinal ponderomotive nonlinearity in Eq. ( 2).…”

Section: Evolution Equation Of Laser Spot Sizementioning

confidence: 99%

Effects of Higher-Order Relativistic Nonlinearity and Wakefield During a Moderately Intense Laser Pulse Propagation in a Plasma Channel

Liu

et al. 2013

Commun. Theor. Phys.

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Using a variational approach, the propagation of a moderately intense laser pulse in a parabolic preformed plasma channel is investigated. The effects of higher-order relativistic nonlinearity (HRN) and wakefield are included. The effect of HRN serves as an additional defocusing mechanism and has the same order of magnitude in the spot size as that of the transverse wakefield (TWF). The effect of longitudinal wakefield is much larger than those of HRN and TWF for an intense laser pulse with the pulse length equaling the plasma wavelength. The catastrophic focusing of the laser spot size would be prevented in the present of HRN and then it varies with periodic focusing oscillations.

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“…In addition, we assume that the ponderomotive force is longitudinal, and as aforementioned, the power of electromagnetic wave P is less than the critical power P c . Therefore, one can neglect the self-channeling of laser beam in the plasma [16], [17].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of the Ponderomotive Force Effect in an Underdense Plasma With a Linear Density Profile

Niknam

Hashemzadeh

Montazeri

2010

IEEE Trans. Plasma Sci.

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In this paper, the nonlinear interaction between a high intense laser pulse and an unmagnetized underdense plasma with a linear density profile is investigated. Considering the inhomogeneity of the medium and ponderomotive nonlinearity, the nonlinear dielectric permittivity of the plasma is found. Then, using the dielectric permittivity and Maxwell's equations, the nonlinear differential equations for the electric and magnetic fields in plasma are obtained. The solution of these equations shows that, by increasing the intensity of laser pulse, the wavelength of oscillations decreases and the electron density profile becomes a highly peaked structure. Finally, it is shown that the amplitude of electron density distribution decreases by increasing the laser wavelength.Index Terms-Laser-plasma interactions, ponderomotive force, underdense plasma.

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Comparison of ponderomotive self-channeling and higher-order relativistic effects on intense laser beams propagating in plasma channels

Cited by 17 publications

References 17 publications

Relativistic channel-coupling focusing enhanced nonlinear guiding of an intense laser beam in a plasma channel

Relativistic channel-coupling focusing enhanced nonlinear guiding of an intense laser beam in a plasma channel

Effects of Higher-Order Relativistic Nonlinearity and Wakefield During a Moderately Intense Laser Pulse Propagation in a Plasma Channel

Numerical Investigation of the Ponderomotive Force Effect in an Underdense Plasma With a Linear Density Profile

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