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29 June 2017 Speckle noise suppression method in holographic display using time multiplexing
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We propose a method to suppress the speckle noise in holographic display using time multiplexing. The diffractive optical elements (DOEs) and the subcomputer-generated holograms (sub-CGHs) are generated, respectively. The final image is reconstructed using time multiplexing of the subimages and the final subimages. Meanwhile, the speckle noise of the final image is suppressed by reducing the coherence of the reconstructed light and separating the adjacent image points in space. Compared with the pixel separation method, the experiments demonstrate that the proposed method suppresses the speckle noise effectively with less calculation burden and lower demand for frame rate of the spatial light modulator. In addition, with increases of the DOEs and the sub-CGHs, the speckle noise is further suppressed.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2017/$25.00 © 2017 SPIE
Su-Juan Liu, Di Wang, Song-Jie Li, and Qiong-Hua Wang "Speckle noise suppression method in holographic display using time multiplexing," Optical Engineering 56(6), 063107 (29 June 2017).
Received: 10 April 2017; Accepted: 13 June 2017; Published: 29 June 2017


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