We report the performance of a germanium quad-cell, composed of four avalanche photodiodes operated in the photon-counting regime, biased above the breakdown voltage. Each pixel detects a single photon in the wavelength range 1-1.5 microm with ~10% quantum efficiency and measures the photon arrival time with a time resolution of 100 ps. By adopting a multiplexed gating of the avalanche photodiodes we avoided the optical cross talk among pixels, thus achieving a noise-equivalent power of 3 x 10(-15) W/Hz((1/2)) for each pixel and demonstrating the tracking capabilities of such a detector.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/ol.21.000059 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An Analysis of Temperature-Dependent Timing Jitter Factors in the Structural Design of Complementary Metal-Oxide-Semiconductor Single-Photon Avalanche Detectors.
Sensors (Basel)
January 2025
Institute of Electronics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan.
Single-Photon Avalanche Photodiodes (SPADs) are increasingly utilized in high-temperature-operated, high-performance Light Detection and Ranging (LiDAR) systems as well as in ultra-low-temperature-operated quantum science applications due to their high photon sensitivity and timing resolution. Consequently, the jitter value of SPADs at different temperatures plays a crucial role in LiDAR systems and Quantum Key Distribution (QKD) applications. However, limited studies have been conducted on this topic.
View Article and Find Full Text PDFA gamma-ray spectrometer based on MAPD-3NM-2 and LaBr(ce) and LSO scintillators for hydrogen detection on planetary surfaces.
Sci Rep
January 2025
REQUIMTE, NOVA School of Science and Technology, University New of Lisbon, Caparica, 2829-516, Portugal.
The presented work is dedicated to the detection of hydrogen, using detectors based on a MAPD (Micropixel Avalanche Photodiode) array based on new MAPD-3NM-2 type photodiodes and two different scintillators (LaBr(Ce) and LSO(Ce)). The physical parameters of the MAPD photodiode used in the study and the intrinsic background of the scintillators were investigated. For the 2.
View Article and Find Full Text PDFDesign and Test of a Calibration System for Avalanche Photodiodes Used in X-Ray Compton Polarimeters for Space.
Sensors (Basel)
December 2024
SCAI Connect s.r.l., Via Vincenzo Lamaro 51, 00173 Rome, Italy.
The development and calibration of a measurement system designed for assessing the performance of the avalanche photodiodes (APDs) used in the Compton scattering polarimeter of the CUSP project is discussed in this work. The designed system is able to characterize the APD gain GAPD and energy resolution across a wide range of temperatures (from -20 °C to +60 °C) and bias voltages Vbias (from 260 V to 410 V). The primary goal was to experimentally determine the GAPD dependence on the and Vbias in order to establish a strategy for stabilizing GAPD by compensating for fluctuations, acting on Vbias.
View Article and Find Full Text PDF2 km Uncompressed HD Video Wireless Transmission at 100 GHz Based on All-Optical Frequency Up- and Down-Conversion.
Micromachines (Basel)
December 2024
Purple Mountain Laboratories, Nanjing 211111, China.
The millimeter-wave wireless transmission system is widely regarded as a promising solution for applications of future 6G communication. This paper presents an experimental comparison between all-optical and all-electric receivers for millimeter-wave communication systems over a 15 m wireless link and demonstrates 200 m and 2 km real-time uncompressed HD video transmission using an all-optical transceiver at 100 GHz. The systems leverage photonics-assisted heterodyne beating techniques at the transmitter, while the receivers employ either an avalanche photodiode (APD)-based all-optical approach or an envelope detection-based all-electric approach.
View Article and Find Full Text PDFSi APD-Based High Speed Infrared Radiation Thermometry for Analysing the Temperature Instability of a Combustion Chamber.
Sensors (Basel)
December 2024
Sensor Systems Group, School of Electrical & Electronic Engineering, The University of Sheffield, Portobello Centre, Pitt Street, Sheffield S1 4ET, UK.
This study introduces a novel approach to analysing the combustion process using a high-speed, non-contact, optical fibre-coupled Si avalanche photodiode (APD)-based infrared radiation thermometer (IRT). The Si APD-IRT, combined with an optimised field-programmable gate array (FPGA)-based digital design, achieves a response time of 1 µs, faster than commercially available instruments. Our instrument captures the entire ignition and reignition cycle of a Jet A kerosene droplet with high temporal precision within a combustion chamber, a feat impossible with traditional thermocouples.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!