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首页> 外文期刊>Optics Letters >Voltage-controlled liquid crystal Pancharatnam-Berry phase lens with broadband operation and high photo-stability
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Voltage-controlled liquid crystal Pancharatnam-Berry phase lens with broadband operation and high photo-stability

机译：电压控制的液晶PancharAtnam-Berry相位透镜，具有宽带操作和高光稳定性

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摘要

Pancharatnam-Berry phase optical elements (PBOEs) have received much attention due to their ability to generate complex structured light or to manipulate the shape of a light beam. This work demonstrates a tunable liquid crystal (LC) Pancharatnam-Berry (LCPB) lens using a simple and cost-effective PB phase hologram optical setup and thermal polymerization to form an irreversible photo-patterning alignment layer. The LCPB lens with high photo-stability supports ultra-broadband operation and provides a diffraction efficiency of similar to 90% throughout the visible spectral range, achieved by applying the appropriate voltages. The LCPB lens functions as a convex or a concave lens, depending on the handedness of the circularly polarized incident light, so its image reduction and magnification functions are demonstrated, and its photo-stability is characterized. The fabrication of the proposed LC PBOEs is simpler and more cost-effective than previous methods, and the irreversible photo-patterning alignment layer that is formed by thermal polymerization allows larger operational bandwidths, supporting new applications. (C) 2020 Optical Society of America
机译：Pancharatnam-Berry相位光学元件（PBOES）由于它们能够产生复杂的结构光或操纵光束的形状而受到多大关注。这项工作使用简单且经济高效的PB相全息图光学设置和热聚合来演示可调谐液晶（LC）Pancharatnam-Berry（LCPB）镜片，以形成不可逆的光图案对准层。具有高光稳定性的LCPB透镜支持超宽带操作，并提供相似的衍射效率与整个可见光谱范围内的90％相似，通过应用适当的电压实现。 LCPB透镜用作凸起或凹透镜，这取决于圆极化入射光的手性，因此证明了其图像还原和放大功能，其光稳定性表征。所提出的LC PbOes的制造比以前的方法更简单，更成本高，并且通过热聚合形成的不可逆的光图案化对准层允许更大的操作带宽，支持新的应用。 （c）2020美国光学学会

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  • 来源
    《Optics Letters》 |2020年第19期|共4页
  • 作者

    Wang Chun-Ta; Tam Alwin; Meng Cuiling; Tseng Man-Chun; Li Guijun; Kwok Hoi-Sing;

  • 作者单位

    Natl Sun Yat Sen Univ Dept Photon Kaohsiung Taiwan;

    Shenzhen Univ Coll Phys &

    Optoelect Engn Shenzhen 518060 Peoples R China;

    Hong Kong Univ Sci &

    Technol State Key Lab Adv Displays &

    Optoelect Technol Kowloon Clear Water Bay Hong Kong Peoples R China;

    Hong Kong Univ Sci &

    Technol State Key Lab Adv Displays &

    Optoelect Technol Kowloon Clear Water Bay Hong Kong Peoples R China;

    Shenzhen Univ Coll Phys &

    Optoelect Engn Shenzhen 518060 Peoples R China;

    Hong Kong Univ Sci &

    Technol State Key Lab Adv Displays &

    Optoelect Technol Kowloon Clear Water Bay Hong Kong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
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