Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"Single photon avalanche diode"”.
-
Photon-efficient computational imaging with single-photon avalanche diode (SPAD) arrays
Single-photon avalanche diodes (SPADs) are highly sensitive photodetectors that enable LIDAR imaging at extremely low photon flux levels. While conventional image formation methods require hundreds or thousands of photon detections per pixel to suppress noise, a recent computational approach …
-
Transmission Capacity Improvement for Single Photon Avalanche Diode-based Optical Communication Using PAM Modulation
… in optical communication links due to the use of single photon avalanche diode (SPAD) optical receivers. Currently, for non-optically amplified optical communication links that use intensity modulation with direct detection, the highest optical sensitivity is achieved using avalanche photodiodes. …
-
CMOS SINGLE-PHOTON AVALANCHE DIODES AND MICROMACHINED OPTICAL FILTERS FOR INTEGRATED FLUORESCENCE SENSING
… were introduced. They are: the perimeter-gated single-photon avalanche diode (PGSPAD), for on-chip photon counting, and the benzotriazole (BTA)-doped thin-film polymer filter, for on-chip ultraviolet light rejection. Experimental results revealed that the PGSPAD front-end, fabricated in a 0.5 …
-
Long-range depth profiling based on time-correlated single-photon counting
Single-photon detection technologies are of high relevance to light detection and ranging (LiDAR) applications for the range resolution and surface profiling of distant target objects. Modern single-photon detectors offer high quantum efficiencies and small timing jitters in the order of tens of …
-
ADVANCED CMOS SINGLE-PHOTON IMAGER ARCHITECTURES FOR QUANTUM AND SCIENTIFIC IMAGING APPLICATIONS
… modeling, and characterization of advanced Single- Photon Avalanche Diode (SPAD) imager architectures, specifically tailored for quantum and scientific imaging applications. While SPADs offer unmatched picosecond-scale timing precision and single-photon sensitivity, their integration into …
-
Conception de matrices de diodes avalanche à photon unique sur circuits intégrés CMOS 3D
… d’intégration. Pour ces raisons, les photodiodes avalanche à photon unique (Single photon avalanche diode, ou SPAD) suscitent beaucoup d’intérêt depuis quelques années pour ses performances en temps et sa grande photosensibilité. Les SPAD sont des photodiodes avalanche opérées au-dessus de …
-
Light in Living Systems: Ultra-Weak Photon Emission and Fluorescence Lifetime Imaging of Cellular Dynamics
Ultra-weak photon emission (UPE) is a phenomenon intrinsic to oxidative metabolism, yet its detection and biological role remain contested. This thesis bridges theoretical, technical, and biological perspectives to advance the study of cellular light. Part I provides a critical review of UPE, …
-
Supercontinuum radiation for ultra-high sensitivity liquid-phase sensing
… was successfully developed. Use of a novel single-photon avalanche diode (SPAD) array enabled the simultaneous detection of ring-down events at multiple spectral positions for BB-CRDS measurements. The performance of both techniques is demonstrated through a number of applications that …
-
Data processing for 3D time of flight depth imaging
… three LiDAR systems were developed. These were a single point ranging system, a long range 3D imaging system with scanning and a short range flash 3D and intensity imaging system (4Di). The single point ranging module was designed as part of an EU funded project (INSPEX) to develop a smart cane …
-
Photon-Number Resolving by Superconductive Devices
… these fields are due to non-ideal devices: both single photon sources and single photon detectors. In these field of applications, detectors require to be able to resolve the number of photons in a light pulse. Presently state of the art indicates that classical semiconductor light detectors …
-
RO-Based TDC Design with Configurable Resolution and Power for SPAD-Based TCSPC LiDAR Applications
Single-photon avalanche diodes (SPAD) are used to measure time-of-flight (ToF) using CMOS time-to-digital Converters (TDCs) for compact, low-cost, and highly integrated three-dimensional (3D) sensing. The TDC specifications are critical determinants of the system's range, resolution, and accuracy. …