Astigmatism correction and quality optimization of computer-generated holograms for holographic waveguide displays

Wen Kai Lin, Osamu Matoba, Bor Shyh Lin, Wei Chia Su

Research output: Contribution to journalArticle


In this manuscript, the astigmatism of the waveguide combiner with a pair of symmetry HOEs was analyzed. The light field can be predicted by the modified convolution formulation of Fresnel diffraction when the information of light passes through the astigmatism causing element. Then the astigmatism can be corrected. The theory was experimentally proved by the system with a phase-only SLM and a diffraction planar waveguide. Furthermore, the image quality of astigmatism corrected phase-type CGHs can be improved via the iteration process. Since the coherence of light source was employed, the temporal averaging method was utilized to avoid speckle noise.

Original languageEnglish
Pages (from-to)5519-5527
Number of pages9
JournalOptics Express
Issue number4
Publication statusPublished - 2020 Feb 17


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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