Addressable Dynamic Metasurface Holographic Display Method Based on Composite Antenna

Abstract

The invention relates to an addressable dynamic metasurface holographic display method based on a composite antenna, belonging to the technical fields of micro-nano optics and holographic display application. The addressable dynamic metasurface holographic display method achieves phase recovery of two pure phase holograms with quantitative relation by employing an addressable random pixel half-image transformation Fidoc algorithm, connects two light field phase distributions corresponding to the two selected images in an iteration mode and allows the light field phase distributions to meet thepredetermined quantitative relation so as to obtain the addressable dynamic metasurface hologram with switchable reconstructed images. The two composition units of a pure gold V-shaped antenna and acomposite gold / magnesium V-shaped antenna are employed to form a metasurface to control the switching of the holographic phase distribution by changing an external environment to respectively displaytwo different reproduced images and achieve the dynamic holographic display. The addressable dynamic metasurface holographic display method provided by the invention has sub-wavelength pixels in a near-infrared band, is ultrathin and actively adjustable, is capable of being repeatedly switched and addressable.

Description

technical field [0001] The invention relates to a dynamic holographic display method, in particular to an addressable dynamic metasurface holographic display method based on a composite antenna, and belongs to the technical field of micro-nano optics and holographic display applications. Background technique [0002] Holographic technology is a technology that uses the principle of interference and diffraction to record and reproduce the real three-dimensional image of an object. It can truly reconstruct the field distribution of the target light wave and realize the reconstruction of image depth information. In principle, it has advantages that other display technologies cannot match. The ultimate 3D display solution has a wide range of applications in stereoscopic display, interferometry, data storage, medical teaching, image processing and recognition. In recent years, the combination of holographic principles and micro-nano optics has gradually become a cutting-edge hot ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the available space-bandwidth product of the hologram in the prior art is reduced, and proposes an addressable dynamic metasurface holographic display method based on a compound antenna; the method uses a compound antenna as a dynamic metasurface The basic component unit of the surface, there is no concept of subunit, and it will not reduce the available space bandwidth product of the hologram

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