# HoloChrome: Polychromatic Illumination for Speckle Reduction in Holographic Near-Eye Displays

arXiv: https://arxiv.org/abs/2410.24144 · HTML: https://mlsanity.com/paper/2410.24144/

## Key facts

- Cited by 1 papers in the map (data through 14 Oct 2026).
- Builds on 12 of its 71 references that are in the map.
- First posted on arXiv 31 Oct 2024.

## Builds on (most cited first, 12 of 12)

- [Estimating or Propagating Gradients Through Stochastic Neurons for Conditional Computation](https://mlsanity.com/paper/1308.3432/) (2013)
- [Kornia: an Open Source Differentiable Computer Vision Library for PyTorch](https://mlsanity.com/paper/1910.02190/) (2019)
- [Time-multiplexed Neural Holography: A flexible framework for holographic near-eye displays with fast heavily-quantized spatial light modulators](https://mlsanity.com/paper/2205.02367/) (2022)
- [Neural 'Etendue Expander for Ultra-Wide-Angle High-Fidelity Holographic Display](https://mlsanity.com/paper/2109.08123/) (2021)
- [Multi-color Holograms Improve Brightness in Holographic Displays](https://mlsanity.com/paper/2301.09950/) (2023)
- [Holographic Parallax Improves 3D Perceptual Realism](https://mlsanity.com/paper/2404.11810/) (2024)
- [Multisource Holography](https://mlsanity.com/paper/2309.10816/) (2023)
- [Depolarized Holography with Polarization-multiplexing Metasurface](https://mlsanity.com/paper/2309.14668/) (2023)
- [Towards Multifocal Displays with Dense Focal Stacks](https://mlsanity.com/paper/1805.10664/) (2018)
- [Waveguide Holography: Towards True 3D Holographic Glasses](https://mlsanity.com/paper/2211.02784/) (2022)
- [Large 'Etendue 3D Holographic Display with Content-adaptive Dynamic Fourier Modulation](https://mlsanity.com/paper/2409.03143/) (2024)
- [Intensity interferometry-based 3D imaging](https://mlsanity.com/paper/2010.03797/) (2020)

## Built on by (most cited first, 1 of 1)

- [Complex-Valued 2D Gaussian Representation for Computer-Generated Holography](https://mlsanity.com/paper/2511.15022/) (2025)

## Abstract (arXiv)

Holographic displays hold the promise of providing authentic depth cues, resulting in enhanced immersive visual experiences for near-eye applications. However, current holographic displays are hindered by speckle noise, which limits accurate reproduction of color and texture in displayed images. We present HoloChrome, a polychromatic holographic display framework designed to mitigate these limitations. HoloChrome utilizes an ultrafast, wavelength-adjustable laser and a dual-Spatial Light Modulator (SLM) architecture, enabling the multiplexing of a large set of discrete wavelengths across the visible spectrum. By leveraging spatial separation in our dual-SLM setup, we independently manipulate speckle patterns across multiple wavelengths. This novel approach effectively reduces speckle noise through incoherent averaging achieved by wavelength multiplexing. Our method is complementary to existing speckle reduction techniques, offering a new pathway to address this challenge. Furthermore, the use of polychromatic illumination broadens the achievable color gamut compared to traditional three-color primary holographic displays. Our simulations and tabletop experiments validate that HoloChrome significantly reduces speckle noise and expands the color gamut. These advancements enhance the performance of holographic near-eye displays, moving us closer to practical, immersive next-generation visual experiences.