科研之友
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摘要
The effect of weakly relativistic ponderomotive force in the interaction of cosh-Gaussian laser beams with a plasma is studied. This force modifies the electron density distribution in the plasma. A nonlinear differential equation governing the evolution of the beam width parameter f in the WKB and paraxial approximations is set up using a parabolic equation approach and solved numerically. Self-focusing of a cosh-Gaussian beam is studied at various values of the decentered parameter b. Numerical analysis shows that the b parameter plays a vital role in the propagation characteristics in the plasma.
- 出版日期2013-11
