Time-of-flight single-photon counting laser ranging offers an important tool for remote sensing and imaging. However, limited by the temporal properties of a single-photon detection and counting system, it encounters a challenge for high-resolution and high-precision distance metrology. Here, we incorporated dual-comb based laser ranging, an enabling technique for rapid distance measurements with high precision and large range ambiguity, with time-correlated single-photon counting (TCSPC) technology and demonstrated its feasibility for precise laser ranging under a photon-starved condition. Based on interferometric measurements of two asynchronous 2.8-pW, 25-GHz electro-optic laser combs with TCSPC, micrometer-level ranging precision was achieved for consistent distance measurements (a stand-off distance of 15.6 m) over several days. New opportunities might open up for high-resolution and high-precision single-photon counting laser ranging.

中文翻译：

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光频梳单光子计数激光测距

飞行时间单光子计数激光测距为遥感和成像提供了重要工具。然而，受单光子检测和计数系统时间特性的限制，它遇到了高分辨率和高精度距离计量的挑战。在这里，我们结合了基于双梳的激光测距，一种用于高精度和大范围模糊度的快速距离测量的使能技术，以及时间相关单光子计数（TCSPC）技术，并证明了其在光子下精确激光测距的可行性。饿死的状态。基于使用 TCSPC 对两个异步 2.8pW、25GHz 电光激光梳的干涉测量，在几天内实现了微米级的测距精度，以实现一致的距离测量（15.6 m 的距离）。