Plasma-aided radiation guiding in a free-electron laser |
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Authors: | Agarwal R.N. Ghanshyam Tripathi V.K. Agarwal P.C. |
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Affiliation: | Dept. of Phys., Indian Inst. of Technol., New Delhi; |
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Abstract: | The introduction of a plasma in a free-electron laser (FEL) helps radiation guiding via nonlinear refraction. At high-radiation 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/ωpo, where ωpo is the unperturbed plasma frequency and c is the velocity of light in vacuum |
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