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US 8,624,497 B1Granted
Terahertz (THz) reverse micromagnetron
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsAndres Larraza, David M. Wolfe, Jeffrey K. Catterlin
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Abstract
A THz reverse micromagnetron includes a MEMS-based reverse magnetron configuration in which the anode is located at the center of the magnetron surrounded by a cathode ring. Electrons move radially inward in the combined electric and magnetic cross-fields and can reach orbiting angular frequencies in the THz region, even with a magnetic field of the order of 1 T or less. The THz reverse micromagnetron is portable, operates at room temperature, and can be bright.
Claims13
A terahertz (THz) reverse micromagnetron assembly comprising:
- a chip mount, the chip mount adapted to mount a chip;
- a chip mounted on the chip mount, the chip comprising:
- a plurality of terahertz (THz) reverse micromagnetrons, each THz reverse micromagnetron comprising:
- a cathode ring having a central void, the cathode ring having an interior wall facing the central void, the interior wall having scalloping;
- and
- an anode post centrally located within the central void of the cathode ring;
- wherein the chip has a void centrally located on the chip;
- a magnet assembly having a first pole and a second pole arranged in a push-pull configuration, wherein each of the first pole and the second pole has a central void, and wherein the chip mount is positioned between the first pole and the second pole of the magnet assembly;
- a first reflecting mirror and a second reflecting mirror,
- wherein the first reflecting mirror and the second reflecting mirror form a confocal cavity having a confocal point,
- further wherein the chip is positioned in the confocal plane of the confocal cavity;
- and
- wherein application of an applied voltage between the cathode ring and the anode post causes field-emitted electrons to be accelerated radially inwards producing THz radiation.
10 more elements
Dependencies are inferred from the claim text.