Yang Jia-Zhi, Zhang An-Ning, Wu Qing-Yuan, Li Jian, Meng Zhe, Zhao Qing
Center for Quantum Technology Research and Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurements (MOE), School of Physics, Beijing Institute of Technology, Beijing 100081, China.
Rev Sci Instrum. 2024 Feb 1;95(2). doi: 10.1063/5.0174067.
High-speed imaging of dynamic scenes is a challenging and important task in many applications. However, conventional imaging methods based on charge coupled devices or complementary metal oxide semiconductors have limitations in temporal resolution and photon sensitivity. To address this problem, we propose a novel high-speed imaging scheme that combines single-pixel imaging with single photon detection and time-correlated single photon counting. Our scheme can achieve high-speed imaging with 64 ps resolution by repeating the motion scenes and using binary outputs from single photon detectors. We demonstrate our scheme by reconstructing the switching process of a digital micro-mirror device and a liquid crystal spatial light modulator. Our scheme can be further improved to 1 ps resolution by using a more accurate time-correlated single photon counting system. Moreover, our scheme can adapt to different speed scenes by adjusting the temporal resolution and reducing the sampling time. Our high temporal resolution imaging scheme further expands the application areas of single-pixel imaging and provides solutions for scenes requiring single photon detection and higher temporal resolution, such as reproducible chemical reaction processes imaging, cellular or sub-cellular bio imaging, single-molecule imaging of rotary motors, high-speed equipment inspection, and other periodic high-speed scenes imaging.
在许多应用中，动态场景的高速成像都是一项具有挑战性且重要的任务。然而，基于电荷耦合器件或互补金属氧化物半导体的传统成像方法在时间分辨率和光子灵敏度方面存在局限性。为了解决这个问题，我们提出了一种新颖的高速成像方案，该方案将单像素成像与单光子探测以及时间相关单光子计数相结合。通过重复运动场景并使用单光子探测器的二进制输出，我们的方案能够实现分辨率为64皮秒的高速成像。我们通过重建数字微镜器件和液晶空间光调制器的切换过程来演示我们的方案。通过使用更精确的时间相关单光子计数系统，我们的方案可以进一步提高到1皮秒的分辨率。此外，我们的方案可以通过调整时间分辨率和减少采样时间来适应不同速度的场景。我们的高时间分辨率成像方案进一步扩展了单像素成像的应用领域，并为需要单光子探测和更高时间分辨率的场景提供了解决方案，例如可重复化学反应过程成像、细胞或亚细胞生物成像、旋转电机的单分子成像、高速设备检测以及其他周期性高速场景成像。
