Highly efficient free-electron laser system

Coherent light generators – Free electron laser

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372 74, H01S 300

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active

050291726

ABSTRACT:
Apparatus, and a related method for its operation, for producing a high-power optical beam from a free-electron laser, at a high overall efficiency. Electrons are accelerated in an electron acceleration system producing bunches of electrons having a narrow energy spread but relatively long time spread. A bunch compression technique converts each bunch to one having a narrow time spread and relatively wide energy spread, suitable for injection into the gain region of a free-electron laser. After exit from the gain region, each electron bunch is further processed to restore it to the same energy-phase distribution as electrons produced by the acceleration system. The restored bunches of electrons are decelerated in the acceleration system, to conserve energy and increase the overall efficiency of the system.

REFERENCES:
patent: 4538275 (1985-08-01), Szu
patent: 4570103 (1986-02-01), Schoen
patent: 4755764 (1988-07-01), Rosenberg et al.

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