Enhanced laser beam coupling to a plasma

Details Enhanced laser beam coupling to a plasma Enhanced laser beam coupling to a plasma

1974-03-18

1976-11-30

Truhe, J. V.

Electric heating

Metal heating

By arc

176 1, G21B 100

Patent

active

039951367

ABSTRACT:
Density perturbations are induced in a heated plasma by means of a pair of oppositely directed, polarized laser beams of the same frequency. The wavelength of the density perturbations is equal to one half the wavelength of the laser beams. A third laser beam is linearly polarized and directed at the perturbed plasma along a line that is perpendicular to the direction of the two opposed beams. The electric field of the third beam is oriented to lie in the plane containing the three beams. The frequency of the third beam is chosen to cause it to interact resonantly with the plasma density perturbations, thereby efficiently coupling the energy of the third beam to the plasma.

REFERENCES:
patent: 3257283 (1966-06-01), Hamberger
patent: 3378446 (1968-04-01), Whittlesey
patent: 3624239 (1971-11-01), Fraas
patent: 3652393 (1972-03-01), Kaiser et al.
patent: 3723246 (1973-03-01), Lubin
patent: 3779864 (1973-12-01), Kaw et al.
J. M. Dawson, Abstract of "Anomalous Absorption of Radiation by Plasmas", 1973 Symposium on Plasma Heating Injection (copies enclosed).

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