Coherent light generators – Free electron laser
Patent
1986-10-09
1987-10-06
Scott, Jr., Leon
Coherent light generators
Free electron laser
372 37, H01S 300
Patent
active
046988157
ABSTRACT:
An apparatus and method for enhancing the efficiency of a free electron laser, (10). A plurality of electrodes, (28) are imbedded in an electrically insulating vacuum tube, (18) enclosing the electron beam, (14) and its copropagating electromagnetic wave. A variable computer controlled high voltage d.c. power supply, (29) is connected to the electrodes, (28) for energizing the electrodes, (28) at saturation indicated by detectors, (30) thereby converting d.c. electric potential to electromagnetic radiation without gain degradation.
REFERENCES:
patent: 3822410 (1974-07-01), Madey
Hiddleston, H. R., Segall, S. B., Catella, G. C., "Gain-Enhanced Free Electron Laser with an Electromagnetic Pump Field", Phys. Quantum Electron., vol. 9, pp. 849-865, 1982.
Sprangle, P., Tang, C. M., Bernstein, I., "The Evolution of Spontaneous and Coherent Radiation in the Free Electron Laser Oscillator", NRL Memorandum Report 5110, Aug. 16, 1983, pp. i-36.
Taguchi, T., Mima, K., Mochizuki, T., "Nonlinear Saturation Mechanisms and Improvement in Free-Electron Lasers", Institute of Laser Engineering, Osaka University, Japan, pp. 817-848., Phys. Quantum Electron., vol. 9.
Kroll, N. M., Morton, P. L., Rosenbluth, M. N., "Free-Electron Lasers with Variable Parameter Wigglers", IEEE Journal of Quantum Electronics, vol. QE-17, No. 8, Aug. 1981, pp. 1436-1468.
Gover, A., Tang, C. M., Sprangle, P., "Feasibility of dc to Visible High-Power Conversion Employing a Stimulated Compton Free Electron Laser . . . ", Journal of Applied Physics 53(1), Jan. 1982, pp. 124-129.
Takeda, H., Segall, S. B., "Amplifier Optimization Study for an FEL Wiggler with a Helical Magnetic Field and an Axial Electric Field", IEEE Transactions on Nuclear Science., vol. NS-30, No. 4, Aug. 1983, pp. 3112-3114.
Bhowmik, A., Cover, R. A., McMullin, W. A., "Comparison of dc Electric Field and Tapered Wiggler Free Electron Laser Efficiency Enhancement Schemes", IEEE Journal of Quantum Electronics, vol. QE-21, No. 7, Jul. 1985, pp. 998-1006.
Gover, A., Tang, C. M., Sprangle, "Design Considerations of a Compton Scattering Free-Electron Laser with an Axial Electric Field", Phys. Quantum Electron., vol. 9 pp. 795-815, 1982.
Bhowmik Anup
McMullin Wayne A.
Field Harry B.
Ginsberg Lawrence N.
Hamann H. Frederick
Jr. Leon Scott
Rockwell International Corporation
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