Multi-band highly reflective flexible wave plate and preparation method thereof

Abstract

The present invention provides a multi-waveband high-reflection flexible wave plate and a preparation method thereof. The structure of the multi-waveband high-reflection flexible wave plate comprisesa nano metallic nickel optical grating substrate, the nano metallic nickel optical grating substrate is provided with a first metal layer, a medium resonant cavity layer and a second metal layer in order, the first metal layer is continuous, namely, and the substrate optical grating groove is completely filled; and the resonant cavity layer and the second metal layer are discontinuously distributed at the substrate nickel optical grating optical grating groove and the grating ridge. The multi-waveband high-reflection flexible wave plate is prepared by combination of a traditional dual-beam exposure technology and an electroforming process and is subjected to large-area preparation by employing a traditional process to achieve functions of 1 / 2 and 1 / 4 wave plates at different wave bands. The multi-waveband high-reflection flexible wave plate has multi-waveband, high-reflection and flexible performances, does not etching of metal, is simple to manufacture, and can be used at the aspectsof flexible display and wearable flexible products.

Description

technical field [0001] The invention relates to a polarization optical element, in particular to a surface plasmon resonance-based multi-band high-reflection flexible wave plate and a preparation method thereof. Background technique [0002] In the field of research and application of light, the generation and conversion control of the polarization state of light is very important. Polarization is the property of the wave plate. Most of the traditional devices for generating and controlling the polarization state of light use birefringent crystal materials. When the light is incident on the birefringent crystal, due to the different The optical refractive index, so when light passes through a birefringent crystal, the transmitted light will have a phase difference in these two orthogonal directions, thereby changing the polarization state of the light. As an important optical device, the traditional crystal wave plate is limited by its physical size, which makes it difficul...

AI Technical Summary

Problems solved by technology

[0004] Based on the above structures, there are generally disadvantages such as single-band limitation and low reflectivity; most of the designs are two-dimensional structures, which need to be fabricated by etching metal

Due to the difficulty of metal etching, the above-mentioned structures have the problems of complicated process and difficult fabrication.

In addition, this type of wave plate uses hard substrates such as silica, alumina, and silicon materials, which are not bendable, so they cannot meet the applications of wearable and flexible devices.

Images