Real-time dynamic hologram in photorefractive ferroelectric liquid crystal with two-beam coupling gain coefficient of over 800 cm–1 and response time of 8 ms

2013 ◽  
Vol 102 (6) ◽  
pp. 063306 ◽  
Author(s):  
Takeo Sasaki ◽  
Masashi Ikegami ◽  
Tatsuya Abe ◽  
Daisuke Miyazaki ◽  
Satoshi Kajikawa ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Response Time ◽  
Real Time ◽  
Gain Coefficient ◽  
Ferroelectric Liquid Crystal ◽  
Time Dynamic ◽  
Beam Coupling ◽  
Dynamic Hologram

Investigation on dynamic holographic display in liquid crystal film doped with carbon dots

2020 ◽  
Vol 10 (6) ◽  
pp. 780-787
Author(s):  
Hongyue Gao ◽  
Suna Li ◽  
Jicheng Liu ◽  
Wen Zhou ◽  
Fan Xu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Real Time ◽  
Diffraction Efficiency ◽  
Carbon Dots ◽  
Applied Electric Field ◽  
Light Polarization ◽  
Forming Process ◽  
Time Dynamic ◽  
Holographic Display

In this paper, we studied the holographic properties of liquid crystal (LC) thin film doped with carbon dots (CDs) which can be used as real-time holographic display screen. The maximum value of diffraction efficiency can reach up to 30% by using a low applied electric field 0.2 V/μm. Holograms in the LC film can be dynamically formed and self-erased. The hologram build-up time and the hologram self-erasure time in the material is fast enough to realize video refresh rate. In addition, the forming process of hologram was studied. The holographic diffraction efficiency was measured depending on the intensity of recording light, applied electric field, the intensity of readout light, and readout light polarization direction. Triple enhancement of the diffraction efficiency value by the modulation of voltage under the condition of low recording energy is presented. Therefore, we develop an easy way to obtain real-time dynamic holographic red, green and blue displays with high diffraction efficiency, which allow the LC film doped with CDs to be used as a holographic 3D display screen.

Real-Time Dynamic Holographic Three-Dimensional Video Display Based on a Super Fast Response Liquid Crystal Thin Film

2014 ◽  
Vol 41 (2) ◽  
pp. 0209013
Author(s):  
高洪跃 Gao Hongyue ◽  
于瀛洁 Yu Yingjie ◽  
郑华东 Zheng Huadong
Keyword(s):  
Thin Film ◽  
Liquid Crystal ◽  
Real Time ◽  
Three Dimensional ◽  
Fast Response ◽  
Video Display ◽  
Time Dynamic

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

2020 ◽  
Vol 51 (1) ◽  
pp. 1292-1295
Author(s):  
Siyao Wu ◽  
Dingyan Xu ◽  
Zekun Yan ◽  
Xinglei Xu ◽  
Yunfeng Wang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Real Time ◽  
Time Dynamic ◽  
Holographic Display ◽  
Late News

HIGH- AND LOW-MOLAR-MASS LIQUID CRYSTAL MIXTURES FOR PHOTOREFRACTIVE APPLICATIONS

1999 ◽  
Vol 08 (03) ◽  
pp. 329-340 ◽  
Author(s):  
HIROSHI ONO ◽  
NOBUHIRO KAWATSUKI
Keyword(s):  
Liquid Crystal ◽  
Response Time ◽  
Electric Fields ◽  
High Performance ◽  
Molar Mass ◽  
Gain Coefficient ◽  
Research Area ◽  
High Molar Mass ◽  
Bragg Regime ◽  
Photorefractive Material

We describe a highly efficient photorefractive material possessing high-molar-mass liquid crystal (H-LC), low-molar-mass liquid crystal (L-LC), and photoconductive agent. These photorefractive high- and low-molar-mass liquid crystal mixtures (HL-LCMs) show high-performance in a thick grating regime (Bragg regime) under low dc electric fields (< 1 V/μm). The photorefractive properties are strongly dependent on the concentration of the H-LC. The fastest response time of 70 ms is achieved with a gain coefficient of 213 cm-1 in the case of 10 wt% of the H-LC with 0.18 V/μm. The largest gain coefficient of over 600 cm-1 is achieved with the response time of 2.6 s in the case of 40 wt% of the H-LC with 0.7 V/μm. In addition, our future directions in this research area are also presented.

Real-time binary phase holograms on a reflective ferroelectric liquid-crystal spatial light modulator

1994 ◽  
Vol 33 (35) ◽  
pp. 8251 ◽  
Author(s):  
J. Gourlay ◽  
S. Samus ◽  
P. McOwan ◽  
D. G. Vass ◽  
I. Underwood ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Real Time ◽  
Spatial Light Modulator ◽  
Ferroelectric Liquid Crystal ◽  
Light Modulator ◽  
Binary Phase ◽  
Phase Holograms
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