Holographic Recording Performance of Acrylate-Based Photopolymer under Different Preparation Conditions for Waveguide Display.

Zhongwen Shen,Yishi Weng,Chuang Wang,Yuning Zhang,Ao Liu,Xiaohua Li

doi:10.3390/polym13060936

Abstract

This work proposes a green light-sensitive acrylate-based photopolymer. The effects of the preparation conditions for the waveguide applied volume holographic gratings (VHGs) were experimentally investigated. The optimum preparation conditions for holographic recording were revealed. After optimization, the peak of VHG diffraction efficiency reached 99%, the diffractive wavelength bandwidth increased from 13 nm to 22 nm, and the corresponding RIM was 0.06. To prove the wide application prospect of the acrylate-based photopolymer in head-mounted augmented reality (AR) displays, green monochromatic volume holographic waveguides were fabricated. The display results showed that the prototype was able to achieve a 28° diagonal FOV and possessed a system luminance of 300 cd/m2.

Highlights

Volume holographic waveguide is considered to be a potential optical solution for augmented reality (AR) glasses because of its high optical efficiency, low cost, small size and light weight [1,2,3,4]
According to the vector circle analysis method, volume holographic gratings (VHGs) with different parameters can be prepared by adjusting the angles between the object light beam and the reference light beam [5,6], which requires the dynamic response range and refractive index modulation (RIM) of the holographic recording materials to be large enough [7]
We studied the holographic recording characteristics of green sensitive acrylate photopolymers doped with Erythrosin B (EB)

Summary

Introduction

Volume holographic waveguide is considered to be a potential optical solution for augmented reality (AR) glasses because of its high optical efficiency, low cost, small size and light weight [1,2,3,4]. Photopolymer is widely used in holographic waveguide displays [12,13,14,15], optical holographic storage [16], holographic anti-counterfeiting [17], optical communication [18], holographic solar concentrators [19], and holographic beam-shaping diffractive diffusers [20] due to its advantages, which include high diffraction efficiency, high sensitivity, low price and easy preparation

Methods

Results

Conclusion