Multifunctional Metasurface: Holography and Spot Cloud Projection

Autor(es)

Guo, Shuhan ; Shao, Yifan ; Zhan, Junjie ; Yu, Jiaqi ; Wang, Yubo ; Choudhury, Pankaj K. ; Hernandez-Figueroa, Hugo E. ; Ma, Yungui

• Tipo de documento: Artigo Científico
• Fonte: ADVANCED OPTICAL MATERIALS; v. 12, n. 28, p. 9-pg., 2024-08-13.

Resumo

Multifunctionality, integration, and miniaturization are the mainstream trends in modern device development. However, optical display and depth perception, essential for innovative applications like intelligent driving and mixed reality, are typically achieved separately in complex and bulky optical systems. Metasurfaces, ultrathin artificial optical surfaces with strong light-matter interaction capabilities at the nanoscale, offer a versatile platform for creating multifunctional, highly integrated, and miniaturized devices by fully exploring spatial multiplexing and utilizing variables like location, polarization, and frequency. In this study, a multifunctional metasurface that integrates meta-holography with Dammann gratings is presented. By engineering the phase profile, the device can display specific holographic images in the Fresnel region while simultaneously producing a high-density spot cloud with over 37 000 spots covering the entire half space. As a proof-of-concept, a projection and reconstruction experiment is performed to elaborate its potential for retrieving three-dimensional (3D) spatial information of real scenarios. The simultaneous generation of display and point cloud holds significant promise for applications in cutting-edge imaging technologies such as intelligent driving and robot vision. A multifunctional metasurface is proposed in this study to simultaneously generate a periodic holographic image array in the image plane, and high-density spot cloud projection of over 37 K spots and nearly 180 degrees field of view in the far field. An experimental demonstration of 3D reconstruction is further conducted to exhibit its potential in display and 3D spatial sensing. image (AU)

• Processo FAPESP: 21/06506-0 - Metasurfaces totalmente dielétricas fortemente ressonantes baseadas em modos quase-escuros e toroidais
• Beneficiário: Hugo Enrique Hernández Figueroa
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 21/11380-5 - CPTEn - Centro Paulista de Estudos da Transição Energética
• Beneficiário: Luiz Carlos Pereira da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Ciência para o Desenvolvimento
• Processo FAPESP: 21/00199-8 - Redes e serviços inteligentes rumo 2030 (SMARTNESS)
• Beneficiário: Christian Rodolfo Esteve Rothenberg
• Modalidade de apoio: Auxílio à Pesquisa - Programa Centros de Pesquisa em Engenharia
• Processo FAPESP: 22/11596-0 - EMU científico: aquisição de equipamentos de transmissão e caracterização para enlaces de dados em altíssima velocidade
• Beneficiário: Darli Augusto de Arruda Mello
• Modalidade de apoio: Auxílio à Pesquisa - Programa Infraestrutura - Científico