2 edition of **Self-trapping and self-focusing of electromagnetic waves in a plasma.** found in the catalog.

Self-trapping and self-focusing of electromagnetic waves in a plasma.

Kristian Barstad Dysthe

- 235 Want to read
- 2 Currently reading

Published
**1968**
by Dept. of Applied Mathematics, University of Bergen in Bergen
.

Written in English

- Electromagnetic waves.,
- Plasma stability.

**Edition Notes**

Series | Universitetet i Bergen. Matematisk institutt. Report 14 |

Classifications | |
---|---|

LC Classifications | QA801 .B4 no. 14 |

The Physical Object | |

Pagination | 25, [9] l. |

Number of Pages | 25 |

ID Numbers | |

Open Library | OL5729492M |

LC Control Number | 70503102 |

The material has an intensity-dependent refractive index. At the center of the beam, the refractive index is the largest. The induced refractive index profile counteracts diffraction and actually focuses the beam. Self-focusing is important in the design of high-power laser systems. The model demonstrates 3D nonlinear wave propagation. Self-focusing is a non-linear optical process induced by the change in refractive index of materials exposed to intense electromagnetic radiation. A medium whose refractive index increases with the electric field intensity acts as a focusing lens for an electromagnetic wave characterised by an initial transverse intensity gradient, as in a laser beam. The peak intensity of the self-focused.

Title: Observation of Self-focusing of Electromagnetic Waves in a Plasma: Authors: Eremin, B. G.; Litvak, A. G. Publication: ZhETF Pis ma Redaktsiiu, Vol. 13, p For a medium with a third-order optical nonlinearity, with n(x, y) = n 0 + n 2 I(x, y), where n 0 is the field-free refractive index, n 2 is the nonlinear refractive index, and I(x, y) is the field intensity profile, this nonlinear Schrödinger equation (NSE) describes nonlinear self-action effects [15, 16], including the self-focusing of a laser beam as a whole and beam breakup due to.

The paper is concerned with the focusing of nonlinear seismic waves in elastic media with couple stresses. When the waves are described by the linear theory a defocusing at the propagation is observed, in other words, the original plane front of waves transforms to a convex-spherical form. Electromagnetic waves in magnetized plasma The dispersion relation Bruno Despr es (LJLL-UPMC) Electromagnetic waves in magnetized plasma The dispersion relation p. 1 /

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The self-action effects of electromagnetic waves in a plasma are investigated. It is shown that they may be important when the electromagnetic energy density becomes comparable to the thermal energy density of the by: It is shown that they may be important when the electromagnetic energy density becomes comparable to the thermal energy density of the plasma.

During the last few years several papers have occurred [e.g. ] on the phenomena of selffocusing and self-trapping of beams of intense optical-frequency electromagnetic waves in by: Propagation of Electromagnetic Waves in Plasma [Ginzburg, V.

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erences on self-focusing and self-trapping, see [26]. A unied approach to self-action effects is given in [27]. In our review, we take an approach which is opposite to much of the historical sequence. We will rst discuss instabilities, then beam self-focusing, and nally self-trapping.

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A medium whose refractive index increases with the electric field intensity acts as a focusing lens for an electromagnetic wave characterized by an initial transverse intensity gradient, as in a laser beam. The peak intensity of the self-focused region keeps increasing as the wave .Chapter 5 Electromagnetic Waves in Plasmas General Treatment of Linear Waves in Anisotropic Medium Start with general approach to waves in a linear Medium: Maxwell: 1 ∂E ∂B ∧B = µ oj + ; () c2 ∂t ∧E = − ∂t we keep all the medium’s response explicit in j.

Plasma .published since the concept of laser beam self-focusing and self-trapping was proposed [1]. After more than 50 years of intense research the theoretical concepts and models of self-focusing, beam self-trapping, filamentation, and filament plasma defocusing and the corresponding mathematical models were formulated.