| 摘要 |
PROBLEM TO BE SOLVED: To provide a terahertz device having a surface light-emitting radiation pattern or a surface light-receiving pattern.SOLUTION: A terahertz device 30 includes: a semiconductor substrate 1; a first semiconductor layer 91a arranged on the semiconductor substrate 1; an active element 90 laminated on the first semiconductor layer 91a; a second electrode 2 connected to the first semiconductor layer 91a and a cathode K of the active element 90 and arranged on the semiconductor substrate 1; a first electrode 4 connected to an anode A of the active element 90 and arranged on the semiconductor substrate 1 opposed to the second electrode 2; and a rear-surface reflector metal layer 88 arranged on a rear surface of the semiconductor substrate 1 opposed to the first semiconductor layer 91a. The active element 90 forms a resonator between the second electrode 2 and the first electrode 4. Electromagnetic waves are reflected by the rear-surface reflector metal layer 88 and have a surface light-emitting radiation pattern or a surface light-receiving pattern perpendicular to the semiconductor substrate 1.SELECTED DRAWING: Figure 2 |
