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

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.

Light-Controlled Direction of Distributed Feedback Laser Emission by Photo-Mobile Polymer Films

“…Polymer composites are widely used for fabrication of optical and photonic systems [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ]. In particular, they are exploited for the fabrication of holographic volume phase gratings [ 3 , 4 , 12 , 15 , 17 , 18 , 26 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 ].…”

Tunable Waveguides Couplers Based on HPDLC for See-Through Applications

“…In the last two processes, the inclusion of a holographic optical element has provided some possible solutions. In particular, photopolymers have been reported as a good system to bring the photons produced in the image creation to the eye [ 4 ].…”

“…Different architectures have been proposed to generate waveguide couplers based on holographic recording materials that can be used in AR application [ 4 , 5 , 6 ]. In general, these couplers are supported on holographic reflection gratings where the spatial resolution required for the material is over 4000 lines/mm.…”

15.4: Holographic Waveguide Display with Large Field of View Based on Volume Holographic Grating

“…In order to improve the FOV, the diffraction wavelength (or angle) bandwidth should be as large as possible. In our previous work, we obtained a VHG with a bandwidth of 40 nm by optimizing the post-processing method of the grating [7]. In order to simulate and analyze the FOV displayed by the waveguide, we build a model based on the coupled wave theory [8], which includes the grating diffraction efficiency response curve and the image source spectral curve.…”