Wu Jiangwei, Liang Zhaokang, Wang Xueyi, Wei Zhiwei, Li Hao, Chen Yuping, Chen Xianfeng
Opt Lett. 2024 Sep 15;49(18):5087-5090. doi: 10.1364/OL.536761.
Autonomous driving technology has put forward higher requirements for sensors, including light detection and ranging. An optical phased array (OPA) is a viable solution, and numerous efforts have been made in this area. For its outstanding optical properties such as linear electro-optic effect and low optical loss, lithium niobate exhibits great potential and unique advantages in solid-state light-emitting arrays. Here we propose and experimentally demonstrate an end-fire optical phased array on a thin-film lithium niobate (TFLN) for passive beam steering. Furthermore, based on this work, we propose a three-line optical phased array to achieve a larger beam steering range. Our results provide a solution for the integrated optical phased array that shows potential in sensing and imaging with reduced size and power.
自动驾驶技术对包括光探测和测距在内的传感器提出了更高的要求。光学相控阵（OPA）是一种可行的解决方案，并且在这一领域已经做出了大量努力。铌酸锂因其具有线性电光效应和低光学损耗等优异光学特性，在固态发光阵列中展现出巨大潜力和独特优势。在此，我们提出并通过实验证明了一种基于薄膜铌酸锂（TFLN）的端射式光学相控阵用于被动光束转向。此外，基于这项工作，我们提出了一种三线光学相控阵以实现更大的光束转向范围。我们的结果为集成光学相控阵提供了一种解决方案，该方案在传感和成像方面具有潜力，能够减小尺寸并降低功耗。
