Patent ID: 7709797
Filing Date: 2010-05-04
Classification: G01J,H01L

Abstract:
1. A detection device for detecting an electromagnetic wave, comprising: a dielectric portion on which an electromagnetic wave is incident, wherein the electromagnetic wave includes at least a part of a frequency region from 30 GHz to 30 THz; a film located under the dielectric portion in a direction of the incident electromagnetic wave, wherein the film has a dielectric constant with a negative real part with respect to an electromagnetic wave having a frequency in the frequency region; and an electromagnetic wave detection portion located under the film in the direction of the incident electromagnetic wave, wherein the electromagnetic wave detection portion is constructed to detect an electromagnetic wave having a frequency in the frequency region, wherein an absolute value of the real part of the dielectric constant of the film is larger than a dielectric constant of the electromagnetic wave detection portion, a dielectric constant of the dielectric portion is larger than the dielectric constant of the electromagnetic wave detection portion, and a distance between the film and the electromagnetic wave detection portion is not more than a wavelength of an electromagnetic wave having a frequency in the frequency region.