Free-electron laser

Details Free-electron laser Free-electron laser

1985-07-05

1989-02-28

Sikes, William L.

Coherent light generators

Free electron laser

372 21, 372 22, 372 74, 372 99, H01S 300

Patent

active

048092819

ABSTRACT:
A free-electron laser capable of operation at a shorter wavelength than the fundamental lasing wavelength, but without any increase in electron energy requirements. The laser includes a conventional high-energy electron beam source and a wiggler transverse magnetic field through which the beam is passed to produce lasing. Opposed optical mirrors are selected to be reflective at a selected harmonic wavelength as well as at the fundamental wavelength. Lasing is initiated at the fundamental wavelength, but is then supported at the selected harmonic wavelength as well. By appropriate design lasing at the fundamental wavelength may be subsequently terminated without affecting lasing at the harmonic wavelength, which continues at a substantially reduced energy cost than would have been incurred if lasing at the harmonic frequency been initiated in a fundamental mode.

REFERENCES:
patent: 3648193 (1972-03-01), Foster et al.
patent: 4189686 (1980-02-01), Brau et al.

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