Surface plasmon metamaterial pyroelectric hyperspectral imaging system

Abstract

The invention discloses a pyroelectric hyperspectral imaging system of a surface plasmon metamaterial. The system comprises an area array detector, a data processor and a display. Pixels of the core component area array detector comprise a pyroelectric detection layer, a metal layer, a dielectric isolation layer, a two-dimensional material layer, an ionic gel layer and an electrode. The metal layer is arranged above the pyroelectric detection layer, the dielectric isolation layer is arranged above the metal layer, the two-dimensional material layer is arranged above the dielectric isolation layer, the ionic gel layer is coated above the two-dimensional material layer, the grid electrode of the electrode is arranged above the ionic gel layer, and the source electrode and the drain electrode are respectively arranged at two sides of the ionic gel layer. The source electrode and the drain electrode are in contact with the ionic gel layer, the source electrode is connected with a positive electrode of a first external power supply, the grid electrode is connected with a positive electrode of a second external power supply, and the drain electrode is connected with a negative electrode of the first external power supply and a negative electrode of the second external power supply. According to the invention, hyperspectral imaging can be realized by adjusting the voltage of the first external power supply and / or the voltage of the second external power supply.

Description

technical field [0001] The invention relates to the field of spectral imaging, in particular to a surface plasmon metamaterial pyroelectric hyperspectral imaging system. Background technique [0002] Plasmon resonance usually refers to the collective oscillation of free electrons on the surface of metal structures under the irradiation of external electromagnetic waves, resulting in the formation of a localized electromagnetic field enhancement effect on the metal surface. Metamaterials, also known as new artificial electromagnetic materials, are artificial composite materials composed of subwavelength basic units arranged according to certain rules and exhibiting extraordinary physical properties that natural materials do not have. The physical properties of metamaterials can be changed by the design of metamaterial structures and the choice of arrangement, which is very different from ordinary natural materials that only have inherent properties. Metamaterials can achieve...

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Problems solved by technology

The acousto-optic tunable filter system has disadvantages such as small aperture, high cost, and image drift due to the limitations of spectroscopic devices.

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