A multiplexing encoding method is proposed to achieve color complex amplitude holographic display. The band-limited angular spectrum method is utilized to calculate the diffracted wavefront of each channel and the double-phase method is used to encode the color-multiplexing hologram. Numerical simulations and optical experiments are performed to demonstrate the feasibility of the proposed method. It is expected that the proposed method could be widely applied in the holographic field in the future.
A reference light multiplexing method based on computer-generated hologram is proposed to increase spatial bandwidth and information capacity. When the multiplexing computer-generated hologram is illuminated by different reference light waves, different objects can be reconstructed. In addition, Gerchberg-Saxton algorithm is utilized to optimize the multiplexing computer-generated hologram. Numerical simulations and optical experiments are performed to demonstrate the effectiveness of proposed method. It is expected that proposed method could be widely applied in holographic display in the future.
In order to suppress the speckle noise on holographic display, we present one method for introducing initial phase to desired objects when generating computer hologram. The method considers the relationship of gray value among the adjacent pixels. We perform simulation in order to verify the effect of proposed method. We compare the proposed and traditional methods and conclude that proposed method is better than traditional methods in terms of the quality of reconstructed image. We believe this method can greatly enhance the quality of reconstructed images and it will be widely applied in the holographic field in the future.
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