HoloTile RGB: Ultra-fast single-shot, discretized, full-color computer-generated phase-only holography
Abstract
We demonstrate the first use of the HoloTile Computer-Generated Holography (CGH) modality on multi-wavelength targets. Taking advantage of the sub-hologram tiling and Point Spread Function (PSF) shaping of HoloTile allows for reconstruction of high-fidelity, pseudo-digital multi-wavelength images, with well-defined discrete output pixels, without the need for temporal averaging. For each wavelength, the target channels are scaled appropriately, using the same output pixel size. We employ a stochastic gradient descent (SGD) hologram generation algorithm for each wavelength, and display them sequentially on a HoloEye GAEA 2.1 Spatial Light Modulator (SLM) in Color Field Sequential (CFS) phase modulation mode. As such, we get full 8-bit phase modulation at 60 Hz for each wavelength. The reconstructions are projected onto a camera sensor where each RGB image is captured in a single shot. While these show impressive color reconstructions, the method can be adapted to any wavelength combination for use in a plethora of multi-wavelength application.
Keywords
Cite
@article{arxiv.2409.11049,
title = {HoloTile RGB: Ultra-fast single-shot, discretized, full-color computer-generated phase-only holography},
author = {Andreas Erik Gejl Madsen and Jesper Glückstad},
journal= {arXiv preprint arXiv:2409.11049},
year = {2025}
}
Comments
12 pages, 9 figures, preprint submitted to Optics Express