A three-ring structure plasmon-induced transparent optical material and its application

Abstract

The invention discloses a plasmon-induced transparent optical material with a three-ring structure, and belongs to the technical field of plasmon-induced transparency. The plasmon-induced transparent material consists of a substrate and a three-ring structure unit, wherein the three-ring structure unit is arranged on the substrate in a two-dimensional periodical way; the three-ring structure unit comprises two first metal rings in parallel, a second metal ring is arranged between the two first metal rings, the sizes of the first metal rings are uniform with the size of the second metal ring, the second metal ring is rotated along the z-axis space, and an included angle theta of a space formed between the second metal ring and the center connecting line of the two first metal rings is 0 to 80 degrees. The invention also provides related application. The plasmon-induced transparent optical material has the advantages that the optical material is a nanometer electromagnetic metamaterial, and the three-ring structure unit consisting of the three metal rings is arranged on the substrate in the two-dimensional periodical way; the structure stability and reoccurrence are good, and the special electromagnetic response is realized; the transmissivity is high, the color dispersion is large, and the structure parameters can be adjusted.

Description

technical field [0001] The invention belongs to the technical field of plasmon-induced transparency, and specifically relates to a plasmon-induced transparent optical material with a three-ring structure and its application. Background technique [0002] In 1988, Russian scientists Kocharovskaya and Khanin theoretically speculated on the existence of electromagnetically induced transparency; in 1991, since the Harris group first observed electromagnetically induced transparency in experiments using pulsed lasers, electromagnetically induced transparency has been a hot research field , Later, some researchers also realized electromagnetically induced transparency in the ladder-type three-level lead atom vapor. Then, the scientists further studied the refractive properties of the medium, and the results showed that under the electromagnetically induced transparency effect, the quantum interference effect can eliminate the medium Absorption of light, while significantly reducin...

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Problems solved by technology

[0003] At present, the designed plasmon-induced transparent structures mainly include: stele type, hollow slot type, split resonator ring type, waveguide type, etc., but the above-mentioned structures are complex in design and difficult to manufacture. Processing and other aspects are time-consuming, especially when it comes to stacked structures, the surface flatness and the distinction between layers are even more cumbersome, and only one physical parameter can be controlled to achieve plasmon-induced transparency, or complex materials and materials are required. The combination of various active materials is only possible. Active control involving multiple physical parameters, such as the coupling strength between two resonators, the damping rate of bright modes, etc., is difficult to achieve, which greatly restricts plasmon-induced transparency. Application of technology in actual industrialization and flexible manipulation of various parameters to regulate plasmon-induced transparency

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