Electromagnetic wave generation device and detection device

Abstract

The invention provides an electromagnetic wave generation device. The device includes a substrate provided with a terahertz wave oscillation section including a resonant tunneling diode structure, a two-dimensional electron layer having a semiconductor heterojunction structure, and a transistor section including a source electrode and a drain electrode provided at end portions of the two-dimensional electron layer and a gate electrode provided above the two-dimensional electron layer. The terahertz wave output of the terahertz wave oscillation section changes distribution of electrons in the two-dimensional electron layer.

What is claimed is: 
     
         1 . An electromagnetic wave detection device for detecting an electromagnetic wave, the device comprising:
 a terahertz wave oscillation section including a resonant tunneling diode structure;   a two-dimensional electron layer including a semiconductor heterojunction structure; and   a transistor section including a source electrode and a drain electrode provided at end portions of the two-dimensional electron layer and a gate electrode provided above the two-dimensional electron layer,   wherein, in the case where the electromagnetic wave detection device is irradiated with the electromagnetic wave, the transistor section outputs a signal corresponding to an intensity of the electromagnetic wave, and   wherein the signal is a mixing signal produced by mixing the electromagnetic wave and a terahertz wave from the terahertz wave oscillation section.   
     
     
         2 . The device according to  claim 1 , wherein the terahertz wave oscillation section and the transistor section are arranged on the same side of a substrate. 
     
     
         3 . The device according to  claim 1 , wherein the terahertz wave oscillation section and the transistor section are arranged on different sides of a substrate. 
     
     
         4 . An apparatus comprising the electromagnetic wave detection device according to  claim 1  and
 a power source configured to drive the electromagnetic wave detection device, 
 the apparatus being configured to transmit a terahertz wave signal.