Direct Optical Fringe Writing of Diffraction Specfic Coherent Panoramagrams in Photorefractive Polymer for Updatable Three-Dimensional Holographic Display

Sunny Jolly, V. Michael Bove, Jr.


Progress in the development of an updatable holographic display system based around the direct transfer of computer-generated holographic fringe patterns from LCoS SLMs into photorefractive polymeric materials is presented. This architecture is poised as a simplifying alternative to previous demonstrations of updatable holographic displays in photorefractive polymeric materials based around conventional interference-based holographic stereogram techniques. Our system concept – comprised of fringe pattern generation on computer, fringe pattern transfer from SLM to photorefractive polymer, and spatial multiplexing for large-image generation – reintroduces accommodation cues to the resulting holographic images and represents a reduction of system footprint, complexity, and cost relative to the current interference-based systems. We present the adaptation of our Diffraction Specific Coherent Panoramagram fringe computation method – originally developed to drive AOM-based holographic displays at video rates while preserving all depth cues, including accommodation – to the current display architecture and depict methods for direct fringe transfer from SLM to photorefractive polymer. Preliminary results of horizontal parallax-only images on this display are presented and directions for performance improvements and system extensions are explored.

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