Electromagnetic wave generator and optical shutter using the same

摘要

An electromagnetic wave generator for outputting wideband electromagnetic waves, including terahertz (THz) band waves, and for controlling wavelengths of the output electromagnetic waves and an optical shutter are provided. The electromagnetic wave generator includes two electrodes that separately face each other, a chargeable particle disposed between the two electrodes, and a chamber disposed to surround the chargeable particle between the two electrodes. When DC voltages are applied to the two electrodes to generate an electric field between the two electrodes, the chargeable particle may be charged. Then, the chargeable particle reciprocates between the two electrodes to generate the electromagnetic waves. A wavelength of the output electromagnetic wave may be controlled by adjusting a potential difference between the two electrodes.

主权项

1. An electromagnetic wave generator comprising:
a first electrode and a second electrode that faces the first electrode; at least one chargeable particle disposed between the first electrode and the second electrode; and a chamber disposed to surround the chargeable particle between the first electrode and the second electrode, wherein the at least one chargeable particle moves between the first electrode and the second electrode such that a movement of the at least one chargeable particle causes a generation of at least one electromagnetic wave when at least one voltage is applied to each of the first electrode and the second electrode, and wherein the chamber is configured such that the at least one electromagnetic wave generated by the movement of the at least one chargeable particle propagates from within the chamber to an outside of the chamber.