Time-resolved Raman spectroscopy using a CMOS SPAD array to remove fluorescent and fibre Raman backgrounds. [PDF]
Biomed Opt ExpressRaman spectroscopy is limited by weak signals, fluorescence interference, and fibre-induced backgrounds. To address this, a 512-pixel complementary-metal-oxide semiconductor (CMOS) single-photon avalanche diode (SPAD) line sensor array with on-chip ...
Tye CS +5 more
europepmc +2 more sources
Sub-Pixel Scanning High-Resolution Panoramic 3D Imaging Based on a SPAD Array
IEEE Photonics Journal, 2021 3D imaging based on single-photon avalanche diode (SPAD) arrays is of interest in many applications. Limited by the small array size and low fill-factor of the available SPAD array, it is difficult for SPAD array-based lidars to achieve high-resolution ...
Ruikai Xue +4 more
doaj +3 more sources
Two-photon image-scanning microscopy with SPAD array and blind image reconstruction. [PDF]
Biomed Opt Express, 2020 Two-photon excitation (2PE) laser scanning microscopy is the imaging modality of choice when one desires to work with thick biological samples. However, its spatial resolution is poor, below confocal laser scanning microscopy.
Koho SV +12 more
europepmc +2 more sources
Fast-Gated 16 × 1 SPAD Array for Non-Line-of-Sight Imaging Applications
Instruments, 2020 In this paper we present a novel single-photon detector specifically designed for Non-Line-Of-Sight (NLOS) imaging applications within the framework of the DARPA REVEAL program.
Marco Renna +5 more
doaj +3 more sources
A Multi-Time-Gated SPAD Array with Integrated Coarse TDCs
Electronics (Switzerland), 2022 Time-gating of single-photon avalanche diodes (SPADs) was commonly used as a method to reduce dark noise in biomedical imaging applications where photon events are correlated with a reference clock.
Jamal Deen, Wei Jiang, M Jamal Deen
exaly +2 more sources
A novel full-chip afterpulsing evaluation technique for 116 × 160 Ge-on-Si SPAD array [PDF]
APL PhotonicsThis Letter presents a novel on-chip afterpulsing characterization method demonstrated using gated-mode short-wave infrared single photon avalanche diode arrays, effectively overcoming the measurement limitations of conventional methods.
Chi-En Chen +9 more
doaj +2 more sources
A review of SPAD array chip design for direct time-of-flight LiDAR [PDF]
Discover NanoAs the requirements of LiDAR for data processing volume, ranging accuracy, and anti-interference capability continue to rise, significant transformations have occurred in recent years in the system architecture, data flow design, and algorithm modules of
Lianghua Mo +3 more
doaj +2 more sources
Spot Tracking and TDC Sharing in SPAD Arrays for TOF LiDAR [PDF]
Sensors, 2021 Light Detection and Ranging (LiDAR) is a widespread technique for 3D ranging and has widespread use in most automated systems that must interact with the external environment, for instance in industrial and security applications. In this work, we study a
Vincenzo Sesta +6 more
doaj +4 more sources
Range-Finding SPAD Array With Smart Laser-Spot Tracking and TDC Sharing for Background Suppression
IEEE Open Journal of the Solid-State Circuits Society, 2022 We present the design and experimental characterization of a CMOS sensor based on Single-Photon Avalanche Diodes for direct Time-Of-Flight single-point distance ranging, under high background illumination for short-range applications.
Vincenzo Sesta +4 more
doaj +2 more sources
320 × 240 SPAD Direct Time-of-Flight Image Sensor and Camera Based on In-Pixel Correlation and Switched-Capacitor Averaging [PDF]
SensorsCorrelation-Assisted Direct Time-of-Flight (CA-dToF) is demonstrated for the first time on a large 320 × 240-pixel SPAD array sensor that includes on-chip high-speed timing support circuitry.
Maarten Kuijk +7 more
doaj +2 more sources