Focal Plane Array Based on Thin-Film Lithium Niobate for Fast-Speed and Low-Power-Consumption Beam Steering

IF 6.5 1区物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Photonics Pub Date : 2025-05-19 DOI:10.1021/acsphotonics.5c00188

Jinze Liu, Binbin Wang, Yan Gong, Jianguo Wang, Yongqian Li, Xuetao Gan, Dayong Qiao

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Abstract

Fast operating speed and low power consumption are critical attributes for effective beam steering of high-performance focal plane arrays (FPAs). Here, we establish an integrated FPA chip based on the electro-optical (EO) effect of thin-film lithium niobate (TFLN) to access these outstanding performances. By leveraging the advantages of the EO effect of TFLN, we showcase an ultrafast operating speed of 25.9 ns and an ultralow power consumption of 35.8 nJ/π, which are 3 and 2 orders of magnitude smaller than those of conventional FPAs, respectively. Our experimental results demonstrate a two-dimensional (2D) beam steering with a field of view (FoV) of 1.48° × 1.95°, a beam divergence of 0.036° × 0.043°, and a background suppression ratio exceeding 20 dB. Furthermore, we present the elimination of blind zones in one direction and the potential application of laser projection of proposed EO FPA. This work demonstrates the remarkable advantages of the EO effect of the TFLN platform for developing fast-speed and low-power-consumption FPA chips suitable for a variety of beam-steering applications.

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基于铌酸锂薄膜的快速低功耗光束导向焦平面阵列

快速的运行速度和低功耗是高性能焦平面阵列（fpa）有效控制光束的关键因素。在这里，我们建立了一个基于薄膜铌酸锂（TFLN）电光（EO）效应的集成FPA芯片，以获得这些优异的性能。利用TFLN的EO效应优势，我们展示了25.9 ns的超快运行速度和35.8 nJ/π的超低功耗，分别比传统的fpa小3个和2个数量级。我们的实验结果证明了二维（2D）光束转向，视场（FoV）为1.48°× 1.95°，光束发散度为0.036°× 0.043°，背景抑制比超过20 dB。此外，我们还介绍了在一个方向上消除盲区和激光投影的潜在应用。这项工作证明了TFLN平台的EO效应在开发适用于各种波束导向应用的快速低功耗FPA芯片方面的显着优势。

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来源期刊

ACS Photonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

11.90

自引率

5.70%

发文量

438

审稿时长

2.3 months

期刊介绍： Published as soon as accepted and summarized in monthly issues, ACS Photonics will publish Research Articles, Letters, Perspectives, and Reviews, to encompass the full scope of published research in this field.