Single photon detection and signal analysis for high sensitivity dosimetry based on optically stimulated luminescence with beryllium oxide

Single photon detection applied to optically stimulated luminescence (OSL) dosimetry is a promising approach due to the low level of luminescence light and the known statistical behavior of single photon events. Time resolved detection allows to apply a variety of different and independent data analysis methods. Furthermore, using amplitude modulated stimulation impresses time- and frequency information into the OSL light and therefore allows for additional means of analysis. Considering the impressed frequency information, data analysis by using Fourier transform algorithms or other digital filters can be used for separating the OSL signal from unwanted light or events generated by other phenomena. This potentially lowers the detection limits of low dose measurements and might improve the reproducibility and stability of obtained data. In this work, an OSL system based on a single photon detector, a fast and accurate stimulation unit and an FPGA is presented. Different analysis algorithms which are applied to the single photon data are discussed.

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Visible Photoluminescence from SI1-xGEx Quantum Wells

MRS Proceedings ◽

10.1557/proc-298-15 ◽

1993 ◽

Vol 298 ◽

Cited By ~ 3

Author(s):

T.W. Steiner ◽

L.C. Lenchyshyn ◽

M.L.W. Thewalt ◽

D.C. Houghton ◽

J.-P. Noël ◽

...

Keyword(s):

Quantum Wells ◽

Band Gap ◽

Single Photon ◽

Chemical Vapor ◽

Band Gap Energy ◽

Single Photon Detection ◽

Electron Hole ◽

Photon Detection ◽

Time Resolved ◽

Localized Excitons

AbstractWe have observed photoluminescence from strained SiGe quantum well layers at energies approximately equal to twice the SiGe band-gap energy. This luminescence is caused by the simultaneous recombination of two electron hole pairs yielding a single photon. Detection of luminescence at twice the band-gap has been previously used in Si to observe luminescence originating from electron-hole droplets, biexcitons, bound multiexciton complexes and polyexcitons. Time resolved spectra at twice the band-gap have been obtained from our SiGe samples prepared by molecular beam epitaxy (MIRE) as well as rapid thermal chemical vapor deposition (RTCVD). This new luminescence clearly distinguishes multiexciton or dense e-h plasma processes from single exciton processes such as bound excitons, free excitons or localized excitons, which are difficult to separate in the usual nearinfrared luminescence.

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Compact 32-channel time-resolved single-photon detection system

10.1117/12.2017355 ◽

2013 ◽

Cited By ~ 4

Author(s):

A. Cuccato ◽

S. Antonioli ◽

A. Gulinatti ◽

I. Labanca ◽

I. Rech ◽

...

Keyword(s):

Single Photon ◽

Detection System ◽

Single Photon Detection ◽

Photon Detection ◽

Time Resolved

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Pulse-resolved multi-photon X-ray detection at 31 MHz based on a quadrant avalanche photodiode

Journal of Synchrotron Radiation ◽

10.1107/s1600577514006730 ◽

2014 ◽

Vol 21 (4) ◽

pp. 708-715 ◽

Cited By ~ 2

Author(s):

Tobias Reusch ◽

Markus Osterhoff ◽

Johannes Agricola ◽

Tim Salditt

Keyword(s):

High Speed ◽

Single Photon ◽

Photon Counting ◽

Avalanche Photodiode ◽

Single Photon Detection ◽

Silicon Photodiode ◽

Photon Detection ◽

Time Resolved ◽

Detection Scheme ◽

X Ray

The technical realisation and the commissioning experiments of a high-speed X-ray detector based on a quadrant avalanche silicon photodiode and high-speed digitizers are described. The development is driven by the need for X-ray detectors dedicated to time-resolved diffraction and imaging experiments, ideally requiring pulse-resolved data processing at the synchrotron bunch repetition rate. By a novel multi-photon detection scheme, the exact number of X-ray photons within each X-ray pulse can be recorded. Commissioning experiments at beamlines P08 and P10 of the storage ring PETRA III, at DESY, Hamburg, Germany, have been used to validate the pulse-wise multi-photon counting scheme at bunch frequencies ≥31 MHz, enabling pulse-by-pulse readout during the PETRA III 240-bunch mode with single-photon detection capability. An X-ray flux of ≥3.7 × 109 photons s−1can be detected while still resolving individual photons at low count rates.

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Full correlation from picoseconds to seconds by time-resolved and time-correlated single photon detection

Review of Scientific Instruments ◽

10.1063/1.1946088 ◽

2005 ◽

Vol 76 (8) ◽

pp. 083104 ◽

Cited By ~ 100

Author(s):

S. Felekyan ◽

R. Kühnemuth ◽

V. Kudryavtsev ◽

C. Sandhagen ◽

W. Becker ◽

...

Keyword(s):

Single Photon ◽

Single Photon Detection ◽

Photon Detection ◽

Time Resolved

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Experimental Characterization of APD and Design of Quenching Circuit for Single-Photon Detection

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.246-247.273 ◽

2012 ◽

Vol 246-247 ◽

pp. 273-278 ◽

Cited By ~ 1

Author(s):

Hua Lü

Keyword(s):

Integrated Circuit ◽

Single Photon ◽

Signal To Noise Ratio ◽

Avalanche Photodiode ◽

Low Noise ◽

High Signal ◽

Single Photon Detection ◽

Single Photon Detector ◽

Photon Detection ◽

Geiger Mode

In this paper, we experimentally characterize the Inga As/Imp avalanche photodiode (APD), which is working in Geiger mode, so as to choose the single photon detector for quantum communication. Due to the fact that bias of APD tends to be flat after avalanche, we first adopt the methodology of passive quenching to determine dark breakdown voltage. Experiment results indicate that temperature reduction will widen the optimal operating region and increase the optimal multiplication; therefore APD will be more sensitive. Epitaxial APD is the best choice for single-photon detection among the APDs we have tested for its low noise level and high signal-to-noise ratio (SNR). Finally, we design a mixed passive-active quenching integrated circuit with gate control, which is quick with the quenching time of about 25ns and has controllable dead time with minimum of about 60ns.

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High sensitivity optical communication based on single-photon detection polarized pulse position modulation

Optics Communications ◽

10.1016/j.optcom.2021.126899 ◽

2021 ◽

pp. 126899

Author(s):

Qiongqiong Zhang ◽

Chengkai Pang ◽

Lei Yang ◽

Zhaohui Li ◽

E. Wu ◽

...

Keyword(s):

Optical Communication ◽

Single Photon ◽

High Sensitivity ◽

Pulse Position Modulation ◽

Single Photon Detection ◽

Photon Detection

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Robust real-time 3D imaging of moving scenes through atmospheric obscurant using single-photon LiDAR

Scientific Reports ◽

10.1038/s41598-021-90587-8 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Rachael Tobin ◽

Abderrahim Halimi ◽

Aongus McCarthy ◽

Philip J. Soan ◽

Gerald S. Buller

Keyword(s):

High Resolution ◽

Real Time ◽

Moving Objects ◽

Single Photon ◽

Three Dimensional ◽

Depth Profiling ◽

High Sensitivity ◽

Single Photon Detection ◽

Photon Detection ◽

Uncertainty Estimates

AbstractRecently, time-of-flight LiDAR using the single-photon detection approach has emerged as a potential solution for three-dimensional imaging in challenging measurement scenarios, such as over distances of many kilometres. The high sensitivity and picosecond timing resolution afforded by single-photon detection offers high-resolution depth profiling of remote, complex scenes while maintaining low power optical illumination. These properties are ideal for imaging in highly scattering environments such as through atmospheric obscurants, for example fog and smoke. In this paper we present the reconstruction of depth profiles of moving objects through high levels of obscurant equivalent to five attenuation lengths between transceiver and target at stand-off distances up to 150 m. We used a robust statistically based processing algorithm designed for the real time reconstruction of single-photon data obtained in the presence of atmospheric obscurant, including providing uncertainty estimates in the depth reconstruction. This demonstration of real-time 3D reconstruction of moving scenes points a way forward for high-resolution imaging from mobile platforms in degraded visual environments.

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