Coherent light generators – Free electron laser
Patent
1984-06-15
1986-05-20
Scott, Jr., Leon
Coherent light generators
Free electron laser
372 28, 372 9, 372102, 315 35, 315 4, H01S 300
Patent
active
045905967
ABSTRACT:
Method and apparatus for modulating coherent radiation generated by an orotron in accordance with a low voltage control signal applied to the diffraction grating to vary the grating-to-cathode voltage from the cathode-to-collector voltage over a selected voltage range determined by the maximum and minimum values of the control voltage. For amplitude modulation, the grating-to-cathode voltage is varied within a voltage range between a lower voltage at which the orotron output power starts to fall abruptly and a cutoff voltage at which coherent radiation ceases. For frequency modulation, the grating-to-cathode voltage is varied within a voltage range, including the point of maximum power output, where there is a minimum change of output power with a change in the grating-to-cathode voltage.
REFERENCES:
Wortman et al., "The Orotron Emerges as a Millimeter-Wave Source", Microws, p. 126, May 1982.
Wortman et al., Millimeter-Wave Orotron Oscillation-Part II Experiment"; IEEEJQE, vol. QE-17, No. 8, Aug. 1981.
Dropkin Herbert
Leavitt Richard P.
Wortman Donald E.
Elbaum Saul
Jr. Leon Scott
Lane Anthony T.
McDonald Thomas E.
The United States of America as represented by the Secretary of
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