Papers & References

Speckle reduced holographic display system with a jointly optimized rotating phase mask

LETO / LETO-3 Spatial Light Modulators
Digital-/ Computer Holography/ CGH Misc.: Speckle / Characterization / Metrology
Published on:
Authors: Eunbi Lee, Youngjin Jo, Seung-Woo Nam, Minseok Chae, Chen Chun, Youngjin Kim, Yoonchan Jeong and Byoungho Lee
Abstract:

Speckle noise degrades image quality in systems with coherent light sources, which must be overcome in holographic displays. In this Letter, we introduce a holographic display system with a rotating phase mask for speckle noise reduction. The rotating phase mask works in a similar way as a conventional rotating diffuser, but its pattern is jointly optimized with the spatial light modulator to maintain the contrast of the reconstructed image. The effectiveness of our system is verified through both numerical simulations and a tabletop prototype, reducing the speckle contrast by 38.8% while preserving the image quality.

Open Access

Publication: Optics Letters
Issue/Year: Opt. Lett. 49, 5659-5662 (2024)
DOI: 10.1364/OL.536492
Link: https://doi.org/10.1364/OL.536492
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