scholarly journals 500 MHz resonant photodetector for high-quantum-efficiency, low-noise homodyne measurement

2018 ◽  
Vol 89 (6) ◽  
pp. 063120 ◽  
Keyword(s):  
Quantum Efficiency ◽  
Low Noise ◽  
High Quantum Efficiency ◽  
High Quantum

Highly ordered bimolecular crystalline blends for low-noise and high-detectivity polymeric photodiodes

2016 ◽  
Vol 4 (39) ◽  
pp. 9197-9202 ◽  
Author(s):  
Kyu Min Sim ◽  
Seongwon Yoon ◽  
Dae Sung Chung
Keyword(s):  
Quantum Efficiency ◽  
High Performance ◽  
Low Noise ◽  
High Quantum Efficiency ◽  
Noise Current ◽  
High Quantum

Suppressing noise current while maintaining high quantum efficiency is essential for realizing high-performance photodiodes.

Back-illuminated GaN/AlGaN heterojunction photodiodes with high quantum efficiency and low noise

1998 ◽  
Vol 73 (8) ◽  
pp. 1086-1088 ◽  
Author(s):  
Wei Yang ◽  
Thomas Nohova ◽  
Subash Krishnankutty ◽  
Robert Torreano ◽  
Scott McPherson ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Low Noise ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Back Illuminated

scholarly journals The 1-Megapixel pnCCD detector for the Small Quantum Systems Instrument at the European XFEL: system and operation aspects

2021 ◽  
Vol 28 (2) ◽  
pp. 576-587
Author(s):  
Markus Kuster ◽  
Karim Ahmed ◽  
Kai-Erik Ballak ◽  
Cyril Danilevski ◽  
Marko Ekmedžić ◽  
...  
Keyword(s):  
Quantum System ◽  
Quantum Efficiency ◽  
Imaging Techniques ◽  
High Sensitivity ◽  
Low Noise ◽  
Nano Particles ◽  
Single Photons ◽  
High Quantum Efficiency ◽  
High Quantum ◽  
Small Quantum

The X-ray free-electron lasers that became available during the last decade, like the European XFEL (EuXFEL), place high demands on their instrumentation. Especially at low photon energies below 1 keV, detectors with high sensitivity, and consequently low noise and high quantum efficiency, are required to enable facility users to fully exploit the scientific potential of the photon source. A 1-Megapixel pnCCD detector with a 1024 × 1024 pixel format has been installed and commissioned for imaging applications at the Nano-Sized Quantum System (NQS) station of the Small Quantum System (SQS) instrument at EuXFEL. The instrument is currently operating in the energy range between 0.5 and 3 keV and the NQS station is designed for investigations of the interaction of intense FEL pulses with clusters, nano-particles and small bio-molecules, by combining photo-ion and photo-electron spectroscopy with coherent diffraction imaging techniques. The core of the imaging detector is a pn-type charge coupled device (pnCCD) with a pixel pitch of 75 µm × 75 µm. Depending on the experimental scenario, the pnCCD enables imaging of single photons thanks to its very low electronic noise of 3 e− and high quantum efficiency. Here an overview on the EuXFEL pnCCD detector and the results from the commissioning and first user operation at the SQS experiment in June 2019 are presented. The detailed descriptions of the detector design and capabilities, its implementation at EuXFEL both mechanically and from the controls side as well as important data correction steps aim to provide useful background for users planning and analyzing experiments at EuXFEL and may serve as a benchmark for comparing and planning future endstations at other FELs.

CCD Based X-ray Detectors

1990 ◽  
Vol 34 ◽  
pp. 357-362 ◽  
Author(s):  
Mark W. Tate
Keyword(s):  
Synchrotron Radiation ◽  
Quantum Efficiency ◽  
Low Noise ◽  
X Ray Diffraction ◽  
High Quantum Efficiency ◽  
X Ray ◽  
High Quantum ◽  
Radiation Sources ◽  
Technology Improvement ◽  
Detector Technology

The advent of intense synchrotron radiation sources for X-ray diffraction has made many otherwise difficult experiments feasible. The increased intensity will not he fully utilized, however, unless there are farther developments in detector technology. Improvement in detector characteristics will, of course, aid those using laboratory sources as well. For instance, construction of low noise, high, quantum efficiency detectors will reduce integration times and enable one to detect weak signals.

64-channels low noise FPGA read-out electronics for segmented MA-PMT with High Quantum efficiency

2011 ◽  
Vol 215 (1) ◽  
pp. 328-332 ◽  
Author(s):  
A. Fabbri ◽  
F. de Notaristefani ◽  
V.O. Cencelli ◽  
P. Bennati ◽  
M.N. Cinti ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Low Noise ◽  
High Quantum Efficiency ◽  
High Quantum

Modulation of optical properties of ZnS QDs embedded glasses through aluminum and manganese doping

2021 ◽  
Author(s):  
Kai Li ◽  
Ying Ye ◽  
Wenchao Zhang ◽  
Yuzhou Hu ◽  
Ying Yang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
Information Display ◽  
Manganese Doping ◽  
High Quantum

Nontoxic cadmium-free ZnS and ZnSe QDs QDs with high quantum efficiency have drawn considerable attention for information display. Applications of ZnS and ZnSe QDs are limited by their short emission...

scholarly journals Highly Efficient Near-Infrared Detector Based on Optically Resonant Dielectric Nanodisks

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 428
Author(s):  
Reza Masoudian Saadabad ◽  
Christian Pauly ◽  
Norbert Herschbach ◽  
Dragomir N. Neshev ◽  
Haroldo T. Hattori ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Speed ◽  
Near Infrared ◽  
Infrared Detector ◽  
High Quantum Efficiency ◽  
Fast Detection ◽  
High Quantum ◽  
Resonant Modes ◽  
Infrared Wavelengths ◽  
Dielectric Metasurface

Fast detection of near-infrared (NIR) photons with high responsivity remains a challenge for photodetectors. Germanium (Ge) photodetectors are widely used for near-infrared wavelengths but suffer from a trade-off between the speed of photodetection and quantum efficiency (or responsivity). To realize a high-speed detector with high quantum efficiency, a small-sized photodetector efficiently absorbing light is required. In this paper, we suggest a realization of a dielectric metasurface made of an array of subwavelength germanium PIN photodetectors. Due to the subwavelength size of each pixel, a high-speed photodetector with a bandwidth of 65 GHz has been achieved. At the same time, high quantum efficiency for near-infrared illumination can be obtained by the engineering of optical resonant modes to localize optical energy inside the intrinsic Ge disks. Furthermore, small junction capacitance and the possibility of zero/low bias operation have been shown. Our results show that all-dielectric metasurfaces can improve the performance of photodetectors.

A novel high quantum efficiency SiGe Phototransistor detector

2021 ◽  
Author(s):  
Yang Xiang ◽  
Hongyun Xie ◽  
Yin Sha ◽  
Ruilang Ji ◽  
Fu Zhu ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
High Quantum Efficiency ◽  
High Quantum
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