Computing high quality phase-only holograms for holographic displays

Praneeth Chakravarthula; Yifan Peng; Joel Kollin; Felix Heide; Henry Fuchs

doi:10.1117/12.2547647

21 February 2020 Computing high quality phase-only holograms for holographic displays

Praneeth Chakravarthula, Yifan Peng, Joel Kollin, Felix Heide, Henry Fuchs

Author Affiliations +

Proceedings Volume 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR); 1131006 (2020) https://doi.org/10.1117/12.2547647
Event: SPIE AR VR MR, 2020, San Francisco, California, United States

Abstract

Holography has demonstrated potential to achieve a wide field of view, focus supporting, optical see-through augmented reality display in an eyeglasses form factor. Although phase modulating spatial light modulators are becoming available, the phase-only hologram generation algorithms are still imprecise resulting in severe artifacts in the reconstructed imagery. Since the holographic phase retrieval problem is non-linear and non-convex and computationally expensive with the solutions being non-unique, the existing methods make several assumptions to make the phase-only hologram computation tractable. In this work, we deviate from any such approximations and solve the holographic phase retrieval problem as a quadratic problem using complex Wirtinger gradients and standard first-order optimization methods. Our approach results in high-quality phase hologram generation with at least an order of magnitude improvement over existing state-of-the-art approaches.

Citation Download Citation

Praneeth Chakravarthula, Yifan Peng, Joel Kollin, Felix Heide, and Henry Fuchs "Computing high quality phase-only holograms for holographic displays", Proc. SPIE 11310, Optical Architectures for Displays and Sensing in Augmented, Virtual, and Mixed Reality (AR, VR, MR), 1131006 (21 February 2020); https://doi.org/10.1117/12.2547647

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