Terahertz radiation device using the same, and terahertz wave generation diode

摘要

PROBLEM TO BE SOLVED: To provide a microminiaturized terahertz wave generating diode, having a simple structure and capable of generating pulsed waves, a continuous wave and laser oscillation, and having an optical system for concentration and divergence etc. of the generated terahertz waves; and to provide terahertz wave radiating equipment comprising this diode and a drive circuit etc.;SOLUTION: At least one pn junction, and an active region in a region of at least one conductivity type from the conductivity types of the p-type and the n-type constructing this p-n junction are provided in a semiconductor substrate. An impurity A for forming this conductivity type and an impurity B for forming the other conductivity type are added to this active region, where the impurity B is less than the impurity A and is added to the extent that it will not degenerate. When a forward bias is applied to the p-n junction, the electromagnetic waves radiated when the minority carriers injected into the active region recombine via the impurity level of the impurity B are set to be in a terahertz region.;COPYRIGHT: (C)2006,JPO&NCIPI