Time-magnified photon counting with 550-fs resolution
Time-magnified photon counting with 550-fs resolution
复制标题
DOI：
10.1364/optica.420816
复制
发表时间：
2021-08-20
期刊：
影响因子：
10.4
通讯作者：
Huang, Shu-Wei
中科院分区：
文献类型：
--
作者：
Li, Bowen;Bartos, Jan;Huang, Shu-Wei
时间相关单光子计数（TCSPC）是一种用于微光荧光寿命显微镜和光子计数飞行时间（ToF）3D成像等应用的技术。然而，最先进的TCSPC单光子定时分辨率（SPTR）被单光子探测器限制在3-100 ps。在这里，我们实验证明了时间放大TCSPC（TM-TCSPC），实现了550 fs的超短SPTR与现成的单光子探测器。TM-TCSPC可以分辨脉宽差为130 fs的超短脉冲，精度为22 fs。当应用于光子计数ToF 3D成像时，TM-TCSPC极大地抑制了将所有光子计数ToF 3D成像系统限制在99.2%的距离走动误差，从而分别提供了26 μ m和3 μ m的高深度精度和精度。(C)2021年美国光学学会根据OSA开放获取出版协议的条款
Time-correlated single-photon counting (TCSPC) is an enabling technology for applications such as low-light fluorescence lifetime microscopy and photon counting time-of-flight (ToF) 3D imaging. However, state-of-the-art TCSPC single-photon timing resolution (SPTR) is limited to 3-100 ps by single-photon detectors. Here, we experimentally demonstrate a time-magnified TCSPC (TM-TCSPC) that achieves an ultrashort SPTR of 550 fs with an off-the-shelf single-photon detector. The TM-TCSPC can resolve ultrashort pulses with a 130-fs pulse width difference at a 22-fs accuracy. When applied to photon counting ToF 3D imaging, the TM-TCSPC greatly suppresses the range walk error that limits all photon counting ToF 3D imaging systems by 99.2% and thus provides high depth accuracy and precision of 26 mu m and 3 mu m, respectively. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement