Real-time holographic display: improvements using a multichannel acousto-optic modulator and holographic optical elements

1991 ◽  
Author(s):  
Pierre St-Hilaire ◽  
Stephen A. Benton ◽  
Mark E. Lucente ◽  
John S. Underkoffler ◽  
Hiroshi Yoshikawa
Keyword(s):  
Real Time ◽  
Optical Elements ◽  
Holographic Display ◽  
Acousto Optic Modulator ◽  
Holographic Optical Elements

Coherent backlight unit using holographic optical elements for full-color flat-panel holographic display

2017 ◽  
Author(s):  
Sun Il Kim ◽  
Chil-Sung Choi ◽  
Jungkwuen An ◽  
Hoon Song ◽  
Yunhee Kim ◽  
...  
Keyword(s):  
Flat Panel ◽  
Optical Elements ◽  
Holographic Display ◽  
Holographic Optical Elements ◽  
Full Color

scholarly journals Slim coherent backlight unit for holographic display using full color holographic optical elements

2017 ◽  
Vol 25 (22) ◽  
pp. 26781 ◽  
Author(s):  
Sun Il Kim ◽  
Chil-Sung Choi ◽  
Alexander Morozov ◽  
Sergey Dubynin ◽  
German Dubinin ◽  
...  
Keyword(s):  
Optical Elements ◽  
Holographic Display ◽  
Holographic Optical Elements ◽  
Full Color

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.

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