Coherent light generators – Particular beam control device – Tuning
Patent
1985-08-14
1987-06-16
Wan, Gene
Coherent light generators
Particular beam control device
Tuning
H01S 310
Patent
active
046740910
ABSTRACT:
The tuning of the output of a free electron laser to different wavelengths is accomplished using a tilting resonator. In a free electron laser, relativistic electrons travel through a periodic magnetic field and oscillate to amplify coherent optical radiation within a resonator with the same polarization as the magnet. Usually, the electron beam is parallel with the resonator axis and the fundamental harmonic is ordinarily used in the transverse magnetic field. By tilting the resonator axis with respect to the electron beam and transverse magnetic field, the free electron laser's output is tuned to different wavelengths. By using higher harmonics (f=3,5,7, . . . ) the free electron laser produces lasing in several wavelengths simultaneously. These several wavelengths are also tuned by the tilting resonator.
REFERENCES:
patent: 3822410 (1974-07-01), Madey
patent: 4287488 (1981-09-01), Brau et al.
patent: 4331936 (1982-05-01), Schlesinger et al.
patent: 4345329 (1982-08-01), Doucet et al.
patent: 4425649 (1984-01-01), Elias et al.
William B. Colson, "The Nonlinear Wave Equation for Higher Harmonics in Free-Electron Lasers" IEEE Journal of Quantum Electronics, vol. QE 17, No. 8, Aug. 1981.
Auton William G.
Singer Donald J.
The United States of America as represented by the Secretary of
Wan Gene
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