Optical imaging element with magnetic reflecting layer imaging unit and preparation method thereof

Abstract

The invention provides an optical imaging element with magnetic reflecting layer imaging units and a preparation method thereof. The optical imaging element comprises a plurality of overlapped optical imaging units, and each optical imaging unit comprises an upper light-transmitting laminated body and a lower light-transmitting laminated body, each of the upper-layer light-transmitting laminated body and the lower-layer light-transmitting laminated body is composed of a plurality of light-transmitting strips with reflecting layers in parallel, and the direction of the first light-transmitting strips in the upper-layer light-transmitting laminated body and the direction of the second light-transmitting strips in the lower-layer light-transmitting laminated body are vertically intersected; the reflecting layer is a sandwich laminated metal magnetic thin layer and comprises a first metal aluminum layer, a central magnetic layer and a second metal aluminum layer. According to the invention, a binary magneto-optical photonic crystal with a building block structure can be formed, or a ternary magneto-optical photonic crystal structure can be formed when a plurality of optical imaging units are stacked, the non-reciprocal effect at the forbidden band edge reaches the maximum, the non-reciprocal phase shift region can be realized without huge thickness by using the non-reciprocal phase shift region, the optical loss is reduced, and the refraction imaging accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of optical imaging elements, and in particular relates to an optical imaging element with a magnetic reflective layer imaging unit and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of cutting-edge technologies such as aerospace technology, optoelectronic technology, atomic energy technology and laser technology, the performance requirements for optical components are also getting higher and higher. In the above-mentioned high-tech fields, optical components are widely used, but the surface quality requirements of optical components are relatively high. However, the micro-channel matrix optical waveguide plate realized by two layers of orthogonally arranged transparent materials is now used. The resolution and definition of aerial imaging are not enough, which not only affects the user experience, but also puts forward higher requirements for applicati...

AI Technical Summary

Problems solved by technology

In the above-mentioned high-tech fields, optical components are widely used, but the surface quality requirements of optical components are relatively high. However, the micro-channel matrix optical waveguide plate realized by two layers of orthogonally arranged transparent materials is now used. The resolution and definition of aerial imaging are not enough, which not only affects the user experience, but also puts forward higher requirements for application scenarios, which greatly restricts the commercial promotion and large-scale application of mediumless aerial imaging technology.

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