Plasma-Aided Radiation Guiding in a Free-Electron Laser
نویسندگان
چکیده
The introduction of a plasma in a free-electron laser (FEL) helps radiation guiding via nonlinear refraction. At highradiation power density, when oscillatory electron velocity is comparable to the electron thermal velocity, the radiation pushes plasma radially out, forming a depleted plasma duct and guiding the radiation. The radius of the self-trapped laser is ~C/OJPO , where UJPO is the unperturbed plasma frequency and c is the velocity of light in vacuum.
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