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27

2025-06

剑芯光电、北航和极弱磁场研究院联合研发实现突破：超高对比度、快速响应和连续调节的动态三维（3D）全息显示

近日，北京航空航天大学 Jin Li 团队、杭州极弱磁场重大科技基础设施研究院 Xiaoxun Li 团队和剑芯光电(苏州)有限公司 Kun Li 团队首次实验演示了聚合物分散液晶（PDLC）与宽带超表面的级联器件，实现了超高对比度、快速响应和连续调节的动态三维（3D）全息显示。PDLC 液滴通过高速动态控制系统进行电扫描，从而调制入射光的散射状态。基于自寻址、快速响应和多通道的 PDLC-超表面器件，实现了单色全息图像切换和变色全息显示的动态全息效果，具有宽带、低串扰和高对比度。作者的方案为动态超表面的研究提供了一个全新的视角。 研究成果于 2024 年 12 月 24 日以题为“Dynamic 3D metasurface holography via cascaded polymer dispersed liquid crystal”发表在《Microsystems & Nanoengineering》上。 摘要： Metasurface with natural static structure limits the development of dynamic metasurface holographic display with rapid response and broadband. Currently, liquid crystal (LC) was integrated onto the metasurface to convert the passive metasuface into an active one. But, majority of LC-assisted active metasurfaces often exhibit trade-offs among degree of freedom (DoF, typically less than 2), information capacity, response speed, and crosstalk. Herein, at first time, we experimentally demonstrate a cascaded device with polymer dispersed liquid crystal (PDLC) and broadband metasurface, enabling dynamic three-dimensional (3D) holographic display with ultra-high contrast, rapid response and continuous regulation. The PDLC droplets enable modulation of scattering state of incident light by high-speed dynamic control system for electric scanning. Based on self-addressing, rapid response and multi-channel PDLCmetasurface device, the dynamic holographic effect of monochrome holographic images switching and colorchanging holographic display with broadband, low-crosstalk and high contrast, has been achieved. Our approach offers a novel perspective on dynamic metasurface. 文献标识码：DOI：https://doi.org/10.1038/s41378-024-00855-6

2025-06-27

剑芯光电、北航和极弱磁场研究院联合研发实现突破：超高对比度、快速响应和连续调节的动态三维（3D）全息显示

09

2024-10

剑芯光电董事长李昆博士接受电巢采访

激光加工隐切赛道的新秀-剑芯光电董事长李昆博士接受电巢直播平台采访| 剑芯光电不断创新探索，积累了二十年的行业应用经验，自主研发和生产LCoS空间光调制器,SLM技术填补了国内科技空白，为激光加工客户提供光学整形、分束的一站式光学系统解决方案。

2024-10-09

剑芯光电董事长李昆博士接受电巢采访

30

2024-08

诚邀莅临-第25届中国国际光电博览会

展会时间：2024年9月11日-2024年9月13日 会议地点：深圳国际会展中心（宝安新馆） 欢迎各位莅临参观

2024-08-30

诚邀莅临-第25届中国国际光电博览会

18

2024-04

硅基液晶技术与可重构全光通信网络

摘要：现代光纤通信网络使用波分复用技术极大地提升了网络传输容量.基于硅基液晶技术的波长选择开关使光纤网络运营商在网络节点处可以灵活地调度各个波长信道,让光纤通信网络在波长级具有可重构性，大幅降低了网络的传输和运营成本。

2024-04-18

硅基液晶技术与可重构全光通信网络

18

2024-04

LCoS的亚毫秒切换速度

Abstract: Sub-millisecond response time with a refresh rate higher than 2000 frames per second (fps) and no degradation of the contrast ratio or diffraction efficiency is demonstrated in working liquid crystal on silicon (LCOS) spatial light modulators (SLMs) with 8-bit grey levels of amplitude and phase modulations. This makes possible to achieve an information bandwidth of about 190 Gb s 1 with a 4k LCOS operating at 10-bit phase modulation levels. The normalised contrast stays at almost the unit level for a frame rate up to 1700 fps and at higher than 0.9 for 2500 fps. The diffraction efficiency stays above -1.0 dB for a frame rate up to 2400 fps. Such a fast response allows us to eliminate image blurring in replaying a fast movie.

2024-04-18

LCoS的亚毫秒切换速度

18

2024-04

纯相位硅基液晶 (LCOS) 器件的基础

This paper describes the fundamentals of phase-only liquid crystal on silicon (LCOS) technology, which have not been previously discussed in detail. This technology is widely utilized in high efficiency applications for real-time holography and diffractive optics. The paper begins with a brief introduction on the developmental trajectory of phase-only LCOS technology, followed by the correct selection of liquid crystal (LC) materials and corresponding electro-optic effects in such devices. Attention is focused on the essential requirements of the physical aspects of the LC layer as well as the indispensable parameters for the response time of the device.Furthermore, the basic functionalities embedded in the complementary metal oxide semiconductor(CMOS) silicon backplane for phase-only LCOS devices are illustrated, including two typical addressing schemes. Finally, the application of phase-only LCOS devices in real-time holography will be introduced in association with the use of cutting-edge computer-generated holograms.

2024-04-18

纯相位硅基液晶 (LCOS) 器件的基础
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