Results 41 to 50 of about 16,481 (212)
Single-carrier impact ionization favored by a limited band dispersion
, 2012 A critical requirement for high gain and low noise avalanche photodiodes is the single-carrier avalanche multiplication. We propose that the single-carrier avalanche multiplication can be achieved in materials with a limited width of the conduction or ...
Darbandi, A., Rubel, O.
core +1 more source
Single photon avalanche detectors: prospects of new quenching and gain mechanisms
Nanophotonics, 2015 While silicon single-photon avalanche diodes (SPAD) have reached very high detection efficiency and timing resolution, their use in fibre-optic communications, optical free space communications, and infrared sensing and imaging remains ...
Hall David, Liu Yu-Hsin, Lo Yu-Hwa
doaj +1 more source
Inverted p-down Design for High-Speed Photodetectors
Photonics, 2021 We discuss the structural consideration of high-speed photodetectors used for optical communications, focusing on vertical illumination photodetectors suitable for device fabrication and optical coupling.
Masahiro Nada +8 more
doaj +1 more source
MCT APD Detection System for Atmospheric Profiling Applications Using Two-Micron Lidar [PDF]
EPJ Web of Conferences, 2020 An advanced detection system, based on mercury cadmium telluride avalanche photodiodes array, was implemented within a 2-μm lidar. Detection system characterization was conducted for performance evaluation including settling time, noise-equivalent-power (
Refaat Tamer F. +3 more
doaj +1 more source
Avalanche noise characteristics of single Al/sub x/Ga/sub 1-x/As(0.3 [PDF]
, 2005 Avalanche multiplication and excess noise have been measured on a series of Al/sub x/Ga/sub 1-x/As-GaAs and GaAs-Al/sub x/Ga/sub 1-x/As (x=0.3,0.45, and 0.6) single heterojunction p/sup +/-i-n/sup +/ diodes.
Chia, C.K. +4 more
core +1 more source
Trap-assisted tunneling in AlGaN avalanche photodiodes
AIP Advances, 2017 We fabricated AlGaN solar-blind avalanche photodiodes (APDs) that were based on separate absorption and multiplication (SAM) structures. It was determined experimentally that the dark current in these APDs is rapidly enhanced when the applied voltage ...
Z. G. Shao +9 more
doaj +1 more source
Evolution of locally excited avalanches in semiconductors
, 2010 We show that semiconductor avalanche photodiodes can exhibit diminutive amplification noise during the early evolution of avalanches. The noise is so low that the number of locally excited charges that seed each avalanche can be resolved.
, +4 more
core +1 more source
Advanced Functional Materials, EarlyView.Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr +7 more
wiley +1 more source
High Efficiency Detection of Argon Scintillation Light of 128nm Using LAAPDs
, 2005 The possibility of efficient collection and detection of vacuum ultraviolet light as emitted by argon, krypton, and xenon gas is studied. Absolute quantum efficiencies of large area avalanche photodiodes (LAAPDs) are derived at these wavelengths.
Chandrasekharan, R. +4 more
core +2 more sources
Imaging of Biphoton States: Fundamentals and Applications
Advanced Functional Materials, EarlyView.Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley +1 more source