2024 | Ze-Yu Wang, Zhou Zhou, Han Zhang, Yang Wei, Hong-Guan Yu, Wei Hu, Wei Chen, Hai-Tao Dai, Ling-Ling Ma, Cheng-Wei Qiu, Yan-Qing Lu
The paper presents a novel approach to vectorial liquid-crystal (LC) holography, which allows for versatile and tunable control of both polarization and amplitude at varying spatial positions. Traditional LC holography, often referred to as scalar holography, only controls the intensity distribution of holographic images with uniform polarization and random phase profiles. In contrast, the proposed method pixelates a single-layer LC to achieve full vectorial holography, where the polarization and amplitude can be independently controlled. The authors develop a two-loop-iteration modified Gerchberg-Saxton (GS) algorithm to generate helicity multiplexed LC-holograms, enabling the synthesis of full-vectorial optical fields with unbounded possibilities. This approach leverages the dynamic tunability of LCs, allowing for advanced applications such as advanced cryptography, super-resolution imaging, and optical communications. The experimental results demonstrate the successful implementation of vectorial LC-holography, including a vectorial LC-holographic clock, lunar phases, and an electric-field and polarization addressable vectorial LC-holographic video. The work highlights the significant opportunities for real-world impacts in various fields and paves the way for further advancements in vectorial optical technologies.The paper presents a novel approach to vectorial liquid-crystal (LC) holography, which allows for versatile and tunable control of both polarization and amplitude at varying spatial positions. Traditional LC holography, often referred to as scalar holography, only controls the intensity distribution of holographic images with uniform polarization and random phase profiles. In contrast, the proposed method pixelates a single-layer LC to achieve full vectorial holography, where the polarization and amplitude can be independently controlled. The authors develop a two-loop-iteration modified Gerchberg-Saxton (GS) algorithm to generate helicity multiplexed LC-holograms, enabling the synthesis of full-vectorial optical fields with unbounded possibilities. This approach leverages the dynamic tunability of LCs, allowing for advanced applications such as advanced cryptography, super-resolution imaging, and optical communications. The experimental results demonstrate the successful implementation of vectorial LC-holography, including a vectorial LC-holographic clock, lunar phases, and an electric-field and polarization addressable vectorial LC-holographic video. The work highlights the significant opportunities for real-world impacts in various fields and paves the way for further advancements in vectorial optical technologies.