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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 8 — Apr. 12, 2010
  • pp: 8077–8086

Influence of pointing fluctuation on intense laser beams propagation in plasma channels

Mingwei Liu, Aihua Deng, Changquan Xia, Jiansheng Liu, Cheng Wang, Ruxin Li, and Zhizhan Xu  »View Author Affiliations

Optics Express, Vol. 18, Issue 8, pp. 8077-8086 (2010)

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An off-axis incident model is presented to analyze the influence of beam pointing fluctuation on the propagation properties of intense laser beams in plasma channels. The equations for the beam spot size and centroid are obtained by applying the variational method. The beam pointing fluctuation contributes additional focusing effect by amplifying relativistic self-focusing, leading to periodically modified oscillations of the spot size. The beam centroid oscillates along the channel axis with the amplitude close to its initial off-axis displacement, while the oscillation frequency is scaled as the square of the dimensionless channel strength parameter.

© 2010 OSA

OCIS Codes
(140.7010) Lasers and laser optics : Laser trapping
(190.4420) Nonlinear optics : Nonlinear optics, transverse effects in
(260.5950) Physical optics : Self-focusing
(350.5500) Other areas of optics : Propagation

ToC Category:
Nonlinear Optics

Original Manuscript: January 12, 2010
Revised Manuscript: March 20, 2010
Manuscript Accepted: March 21, 2010
Published: April 1, 2010

Mingwei Liu, Aihua Deng, Changquan Xia, Jiansheng Liu, Cheng Wang, Ruxin Li, and Zhizhan Xu, "Influence of pointing fluctuation on intense laser beams propagation in plasma channels," Opt. Express 18, 8077-8086 (2010)

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