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

Abstract

The invention provides an optical imaging element with a magnetic reflection layer imaging unit and a preparation method thereof. The optical imaging element includes several superimposed optical imaging units. The optical imaging unit includes an upper light-transmitting laminate and a lower light-transmitting laminate, and the upper light-transmitting laminate The body and the lower light-transmitting laminate are composed of several light-transmitting strips with a reflective layer in parallel, and the direction of the first light-transmitting strip in the upper-layer light-transmitting laminate and the direction of the second light-transmitting strip in the lower light-transmitting laminate are in the same direction. The reflective layer is a sandwich laminated metal magnetic thin layer, which includes a first metal aluminum layer, a central magnetic layer and a second metal aluminum layer. The present invention can form a binary magneto-optical photonic crystal with a building block structure, or a ternary magneto-optical photonic crystal structure when a plurality of optical imaging units are stacked, and the non-reciprocal effect at the edge of the forbidden band is maximized. The shift region realizes a non-reciprocal phase shift region without a huge thickness, reduces light loss, and improves the accuracy of refraction imaging.

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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