Title :
Plasma-aided radiation guiding in a free-electron laser
Author :
Agarwal, R.N. ; Ghanshyam ; Tripathi, V.K. ; Agarwal, P.C.
Author_Institution :
Dept. of Phys., Indian Inst. of Technol., New Delhi, India
fDate :
8/1/1996 12:00:00 AM
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
Keywords :
free electron lasers; laser stability; laser theory; plasma filled waveguides; plasma-beam interactions; depleted plasma duct; electron thermal velocity; free-electron laser; high-radiation power density; nonlinear refraction; oscillatory electron velocity; plasma-aided radiation guiding; self-trapped laser; unperturbed plasma frequency; velocity of light; Ducts; Electron beams; Free electron lasers; Laser beams; Optical refraction; Particle beams; Physics; Plasma density; Refractive index; Undulators;
Journal_Title :
Plasma Science, IEEE Transactions on
