Super-Fast Refresh Holographic Display Based on Liquid Crystal Films Doped With Silver Nanoparticles

Abstract

Holography as a true three-dimensional (3-D) technique is thought to be the ultimate display technique. However, dynamic holographic materials still have problems such as slow refresh, high applied electrical field, etc., to be solved to realize video-rate 3-D display. We present silver nanoparticles (Ag NPs) doped liquid crystal films with very big birefringence and super-fast hologram refresh speed as real-time dynamic holographic medium, which can be applied in holographic video display. And the fastest response time of both build-up and self-erasure of hologram can be up to 0.1 ms, which means the material has the ability to realize a smooth holographic video-rate display. The holographic diffraction efficiency dependent on the intensity of recording light, applied electrical field, etc. is investigated. The maximum diffraction efficiency is measured up to 50% under a low applied electrical field of 0.12 V/μm. Real-time holographic videos at red, green, and blue colors are obtained and the process of hologram formation is analyzed, which shows that the LC films doped Ag NPs can be a good candidate for applications of large-size, real-time, color holographic true 3-D display in future.

Light-Induced Dynamic Holography

“…High-resolution transmission and reflection holographic gratings written in polymeric materials are known and investigated for a long time [1,2], and cover a large variety of applications, ranging from high density data storage [3][4][5], to lasing [6,7], to super-fast holographic displays [8]. More recently, all optically addressable holographic gratings have been also widely studied.…”

High-speed 3D hologram generation method via convolutional neural network

“…Holographic three-dimensional (3D) display can rebuild both the intensity and phase information of real 3D scene, so holographic 3D display is regarded as a true 3D display technology and has been widely concerned [1]. With the development of computer technology, computer-generated holography (CGH) has become a research hotspot, and CGH has great application prospects in medical treatment [2,3], spatial cognition and navigation [4], education [5], etc.…”

85‐5: Late‐News‐Paper: Real Time Dynamic Holographic Display Based on Perovskite Doped Liquid Crystal

“…In 2016, Li et al [12] employed a mixture of nematic LC (5CB) and quantum dots (Zns/InP) to a rise time as short as 6.4 ms, but the decay time was 140 ms. In 2019, Gao et al [13] reported 5CB doped with silver nanoparticles to obtain 50% diffraction efficiency at a recording beam power of 0.1 mW mm -2 . However, diffraction efficiency declined rapidly to 7% with the increase of recording power.…”