Results 21 to 30 of about 2,791 (216)

Discrimination of Photon- and Dark-Initiated Signals in Multiple Gain Stage APD Photoreceivers

open access: yesIEEE Journal of the Electron Devices Society, 2013
We demonstrate the ability of linear mode single carrier multiplication (SCM) avalanche photodiode (APD)-based optical receivers to discriminate single-photon-initiated avalanche events from dark-current-initiated events.
George M. Williams   +3 more
doaj   +1 more source

Geiger Avalanche Photodiodes (G-APDs) and Their Characterization [PDF]

open access: yes, 2011
In many fields and in particular in astrophysical observations, a chronic problem is the photon-starving condition, which becomes severe when images are to be obtained in short acquisition times (from micro to milliseconds), as happens in hot areas of astrophysics: optical counterparts of high-energy gamma-ray bursts, study and interpretation of ...
Giovanni Bonanno   +4 more
openaire   +1 more source

Single photon source characterization with a superconducting single photon detector [PDF]

open access: yes, 2005
Superconducting single photon detectors (SSPD) based on nanopatterned niobium nitride wires offer single photon counting at fast rates, low jitter, and low dark counts, from visible wavelengths well into the infrared.
Mirin, R.P.   +6 more
core   +1 more source

Study on surface leakage current at sidewall in InP-based avalanche photodiodes with mesa structure

open access: yesAIP Advances, 2022
A multi-mesa InGaAs/InP avalanche photodiode (APD) with the advantage of the completely restricted electric field is proposed. The surface defects, which are the reasons for the sidewall leakage current generation in the mesa-structure APD, are ...
Junqin Zhang   +3 more
doaj   +1 more source

Area and Bandwidth Enhancement of an n+/p-Well Dot Avalanche Photodiode in 0.35 μm CMOS Technology

open access: yesSensors, 2023
This paper presents a CMOS-integrated dot avalanche photodiode (dot-APD) that features a small central n+/p-well hemispherical cathode/p-well structure circularly surrounded by an anode ring.
Seyed Saman Kohneh Poushi   +4 more
doaj   +1 more source

CMOS Integrated 32 A/W and 1.6 GHz Avalanche Photodiode Based on Electric Field-Line Crowding [PDF]

open access: yes, 2022
This paper presents a new Si CMOS linear-mode avalanche photodiode (APD) based on an electric field distribution formed by field-line crowding. In this structure, a spherical avalanching electric field is enforced by field-line crowding due to the ...
Zimmermann, Horst; orcid:   +4 more
core   +1 more source

4H-SiC SACM Avalanche Photodiode With Low Breakdown Voltage and High UV Detection Efficiency

open access: yesIEEE Photonics Journal, 2016
In this paper, a high-performance 4H-SiC separated absorption charge multiplication ultraviolet avalanche photodiode (APD) with low breakdown voltage is designed and fabricated. The room temperature dark current of the APD remains at ∼0.1 pA level
Xiaolong Cai   +7 more
doaj   +1 more source

Fractional-Order Total Variation Geiger-Mode Avalanche Photodiode Lidar Range-Image Denoising Algorithm Based on Spatial Kernel Function and Range Kernel Function

open access: yesFractal and Fractional, 2023
A Geiger-mode avalanche photodiode (GM-APD) laser radar range image has much noise when the signal-to-background ratios (SBRs) are low, making it difficult to recover the real target scene.
Xuyang Wei   +7 more
doaj   +1 more source

Spiro‑Linked Double Tetraphenylethenes: Solid‐State Emission and Circularly Polarized Luminescence Imaging

open access: yesAngewandte Chemie, Volume 138, Issue 25, 15 June 2026.
Two spirobisanthracene‐tetraphenylethene (SBA‐TPE) hybrid compounds are synthesized and their photophysical properties in the solid state reported. Circularly polarized luminescence in aggregates, films and dispersions is evaluated. Circularly polarized luminescence imaging is evaluated over crystals revealing discrimination of different types of ...
José L. Páez   +7 more
wiley   +2 more sources

Fine Control of the Electric Field Distribution in the Heterostructure Multiplication Region of AlGaN Avalanche Photodiodes

open access: yesIEEE Photonics Journal, 2017
To enhance avalanche ionization, we designed a new separate absorption and multiplication AlGaN solar-blind avalanche photodiode (APD) by replacing the conventional AlGaN homogeneous multiplication region with a high/low Al content AlGaN ...
Haifan You   +7 more
doaj   +1 more source

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