Metasurface based multichannel vectorial holograms (Conference Presentation)

Thomas Zentgraf; Ruizhe Zhao; Basudeb Sain; Qunshuo Wei; Chengchun Tang; Xiaowei Li; Lingling Huang; Yongtian Wang

doi:10.1117/12.2507761

8 March 2019 Metasurface based multichannel vectorial holograms (Conference Presentation)

Thomas Zentgraf, Ruizhe Zhao, Basudeb Sain, Qunshuo Wei, Chengchun Tang, Xiaowei Li, Lingling Huang, Yongtian Wang

Proceedings Volume 10926, Quantum Sensing and Nano Electronics and Photonics XVI; 109261P (2019) https://doi.org/10.1117/12.2507761
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

Optical holography became a powerful tool for arbitrarily manipulating the wavefronts of light. With the recent development of metasurface holography it became possible to tailor all the fundamental properties of light (amplitude, phase, polarization, wave vector and frequency) within a thin slab of material. However, for exploring the full capability of the information storage of metasurface holograms and enhance the encryption security, smart multiplexing techniques together with suitable metasurface designs are required. Here, we demonstrate a novel method for achieving multichannel vectorial holography and show its potential for obtaining dynamic displays and high-security applications. We explore birefringent metasurfaces for the complete control of polarization channels with the freedom of designing both the polarization dependent phase shift and polarization rotation matrix. We show that although the target holographic phase profiles have quantified phase relations they can process very different information within different polarization manipulation channels. For our metasurface holograms, we demonstrate high fidelity, large efficiency, broadband operation, and a total of twelve polarization channels. Such multichannel polarization multiplexing can be used for dynamic vectorial holographic display and provide triple protection to the optical security devices. The concept is appealing for applications of arbitrary spin to angular momentum conversion and various phase modulation/beam shaping elements.

Conference Presentation

Citation Download Citation

Thomas Zentgraf, Ruizhe Zhao, Basudeb Sain, Qunshuo Wei, Chengchun Tang, Xiaowei Li, Lingling Huang, and Yongtian Wang "Metasurface based multichannel vectorial holograms (Conference Presentation)", Proc. SPIE 10926, Quantum Sensing and Nano Electronics and Photonics XVI, 109261P (8 March 2019); https://doi.org/10.1117/12.2507761

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KEYWORDS

Polarization

Holograms

Holography

Multiplexing

Computer security

Data storage

Optical design

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