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Polarization device based on diffractive chiral metamaterial and its preparation method and optoelectronic device

A chiral metamaterial and polarizing device technology, applied in the field of metamaterial manufacturing, can solve the problems of difficult integration, weak circular dichroism response, uncontrollable angle of outgoing light, etc., and achieve the effect of convenient integration and directional emission.

Active Publication Date: 2021-10-29
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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Problems solved by technology

[0003] In the process of practical application, the inventors found that the existing two-dimensional chiral metamaterial polarizers have weak circular dichroism response, uncontrollable outgoing light angle, and are not easy to integrate

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  • Polarization device based on diffractive chiral metamaterial and its preparation method and optoelectronic device
  • Polarization device based on diffractive chiral metamaterial and its preparation method and optoelectronic device
  • Polarization device based on diffractive chiral metamaterial and its preparation method and optoelectronic device

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Embodiment Construction

[0034] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0035] Optical chirality is not a new concept. As early as 1811, Arago discovered that when linearly polarized light passes through a quartz crystal, its polarization plane will rotate. Then Cicra and Biot also found this optical rotation phenomenon in turpentine oil and tartaric acid solution. In 1848, Pastuer pointed out in his research on the phenomenon of optical rotation that: the atomic arrangement of optically active materials and its mirror image present an asymmetric distribution state, and the molecular structure has the characteristics of a spatial helix, thus introducing the concept of optical chiral effect. Hereinafter, chirality refers specifically to ...

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Abstract

The invention discloses a polarizing device based on a diffractive chiral metamaterial, a preparation method and an optoelectronic device. The polarizing device based on a diffractive chiral metamaterial includes: a substrate, an isolation layer formed on the substrate, and The metal unit array layer formed on the isolation layer; the metal unit array layer includes a metal unit array formed by periodic arrangement of metal units, and the metal units are four metal microstructures arranged in left-hand or right-hand order composed of chiral modules. The polarizing device based on diffractive chiral metamaterials provided by the embodiments of the present invention can realize the adjustment of the circular dichroism of high-order diffracted beams by adjusting the geometric parameters and material composition of the metal unit array, and can realize high-order Directional emission of diffracted light. In addition, the polarization device based on the diffractive chiral metamaterial provided by the present invention is formed based on the substrate and the isolation layer, so it is convenient for integration.

Description

technical field [0001] The invention relates to the technical field of metamaterial manufacturing, in particular to a polarization device based on a diffractive chiral metamaterial, a preparation method and an optoelectronic device. Background technique [0002] Chirality means that an object cannot coincide with its mirror image through operations such as translation and rotation. Chirality is a ubiquitous part of nature, ranging from the shape of galaxies to subatomic, and can be observed from different scales, so it has many applications in life sciences, spectroscopy, sensitive detection, imaging, biochemistry, and quantum computing. widely used in the field. Optical chirality has two common forms: one is optical rotation, that is, the material rotates the polarization state of the incident beam by a certain angle around the direction of propagation; Different absorption responses of left circularly polarized (LCP) and right circularly polarized (RCP) light. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00G02B5/00G02F1/00G02F1/01
CPCG02B1/002G02B5/008G02F1/0063G02F1/0136
Inventor 尤洁罗玉昆江天陶子隆欧阳昊郑鑫杨杰
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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