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<p>The speed, dimensions, and immersive quality of communication have been continuously transformed by advances in information technology: from letters to telegraphs, telephones to video calls, and on-screen display to augmented reality (AR) displays. However, as demands for functional integration and high display quality intensify, significant limitations are encountered by conventional high-refractive-index glass-based diffractive waveguides, including bulkiness, weight, and rainbow artifacts in full-color displays. To overcome these challenges, we developed ultra-thin and ultra-light diffractive waveguides using 4H silicon carbide (SiC). These monolithic SiC waveguides are mass-produced via a specialized nanoimprinting (NIL) process on SiC wafers, leveraging the material’s high refractive index, thermal conductivity, and hardness. The resulting single-layer SiC waveguide achieves rainbow-artifact-free full-color displays while weighing just 3.795&#xa0;g and measuring only 0.75&#xa0;mm thick. Furthermore, we demonstrate compatibility with mass-produced prescription Fresnel lenses, addressing critical needs for myopia correction. This work advances diffractive waveguide display technology and offers a promising path for the future of information interaction.</p>

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SiC diffractive waveguides for augmented reality: single-layer, full-color, rainbow-artifact-free display with vision correction

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年8月21日

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  • Boqu Chen,
  • Ce Li,
  • Xiaoxuan Li,
  • Chenting Fang,
  • Yinggang Chen,
  • Ding Zhao,
  • Lu Cai,
  • Kaikai Du,
  • Min Qiu

摘要

The speed, dimensions, and immersive quality of communication have been continuously transformed by advances in information technology: from letters to telegraphs, telephones to video calls, and on-screen display to augmented reality (AR) displays. However, as demands for functional integration and high display quality intensify, significant limitations are encountered by conventional high-refractive-index glass-based diffractive waveguides, including bulkiness, weight, and rainbow artifacts in full-color displays. To overcome these challenges, we developed ultra-thin and ultra-light diffractive waveguides using 4H silicon carbide (SiC). These monolithic SiC waveguides are mass-produced via a specialized nanoimprinting (NIL) process on SiC wafers, leveraging the material’s high refractive index, thermal conductivity, and hardness. The resulting single-layer SiC waveguide achieves rainbow-artifact-free full-color displays while weighing just 3.795 g and measuring only 0.75 mm thick. Furthermore, we demonstrate compatibility with mass-produced prescription Fresnel lenses, addressing critical needs for myopia correction. This work advances diffractive waveguide display technology and offers a promising path for the future of information interaction.