Dynamic Holographic 3d Display Based On Quantum Dot-doped Liquid Crystal

Holographic display makes observer feel like a vivid,natural scene by recording and reproducing all the information of the object's light field.At present,researchers focus more on how to achieve large field of view,high resolution,and high refresh rate dynamic holographic display.At the same time,with the deepening of the research on holographic display,the research of using photorefractive material as a holographic recording medium to realize dynamic holographic display is considered as a promising technology.The main research work of this thesis is about how to achieve holographic 3D display with high frame rate refresh using quantum dotdoped liquid crystal materials,which is mainly divided into two parts:1.Dynamic holographic display with high refresh rate 120 Hz based on quantum dots(QD)doped liquid crystal(LC).In the experiment,a twobeam interference method was used to achieve dynamic holographic display.The object light information was loaded on the 120 Hz spatial light modulator through a computer,and a free-crosstalk dynamic holographic display was finally achieved.When a quantum dot-doped liquid crystal material is used to achieve dynamic holography,the applied voltage will greatly affect the characteristics of the material.When the voltage is lower,the displayed image will have higher scattering.Therefore,in order to reduce this scattering effect,increasing the voltage while sacrificing a certain display brightness is a method.2.Dynamic holographic display based on Spatial Light Modulator(SLM)direct-writing hologram.This method mainly uses a spatial light modulator to directly load a holographic grating onto a sample to reconstruct the light field emitted by the object.Compared with the two-beam interference generation of holographic grating,the method of generating a hologram by using a spatial light modulator to directly write a hologram is simpler,and greatly avoids the influence of environmental disturbance.In this study,a spatial light modulator was used to load a 30 Hz dynamic holographic video to obtain a crosstalk-free 30 Hz dynamic diffraction video.