Coherent light generators – Long wavelength
Patent
1990-04-11
1991-04-09
Gonzalez, Frank
Coherent light generators
Long wavelength
372 20, 372 38, H01S 100
Patent
active
050070584
ABSTRACT:
A millimeter wave power generator combines two laser beams, tuning the beat frequency to the desired millimeter wave value with an opposing pair of millimeter wave cavities. The combined beam is diffracted onto a plurality of externally powered, modulation doped field effect photodetectors (MDFEPs). A plurality of antennas is provided, one between each pair of adjoining MDFEPs. The antennas are parallel, and each is driven by the MDFEPs at its ends. The back propagating millimeter wave radiation is reflected forward by a wire grid parallel to the antennas. The grid is situated between the diffractor and the MDFEPs, and is spatially tuned to constructively interfere the reflected back propagating with the forward propagating millimeter wave radiation.
REFERENCES:
patent: 4233569 (1980-11-01), Liu
patent: 4272730 (1981-06-01), Digiovanni
patent: 4503403 (1985-05-01), Taylor et al.
patent: 4874953 (1989-10-01), Katz
patent: 4951006 (1990-08-01), Cohen
Cheung Derek T.
Fetterman Harold R.
Hayes Cecil L.
Gonzalez Frank
Hamann H. Fredrick
Hansen Galen J.
Montanye George A.
Rockwell International Corporation
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