Electron-multiplying CCDs for future space instruments

Djazovski, Oleg; Daigle, Olivier; Laurin, Denis; Bedirian, Mireille; Ducharme, Marie-Eve; Artigau, Étienne; Doyon, René

doi:10.1117/12.2036206

Cited by 13 publications

(9 citation statements)

References 9 publications

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“…CICs produced in the serial and multiplication register cannot be simply explained in terms of impact ionization by the accelerated holes. In modern EMCCD cameras, the generation probability of horizontal CICs per shift step results similar to that of vertical CICs [56] [58].…”

Section: Noise Sources In the Detection Processmentioning

confidence: 96%

Super-resolution microscopy of single atoms in optical lattices

et al. 2016

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We report on image processing techniques and experimental procedures to determine the lattice-site positions of single atoms in an optical lattice with high reliability, even for limited acquisition time or optical resolution. Determining the positions of atoms beyond the diffraction limit relies on parametric deconvolution in close analogy to methods employed in super-resolution microscopy. We develop a deconvolution method that makes effective use of the prior knowledge of the optical transfer function, noise properties, and discreteness of the optical lattice. We show that accurate knowledge of the image formation process enables a dramatic improvement on the localization reliability. This allows us to demonstrate super-resolution of the atoms' position in closely packed ensembles where the separation between particles cannot be directly optically resolved. Furthermore, we demonstrate experimental methods to precisely reconstruct the point spread function with sub-pixel resolution from fluorescence images of single atoms, and we give a mathematical foundation thereof. We also discuss discretized image sampling in pixel detectors and provide a quantitative model of noise sources in electron multiplying CCD cameras. The techniques developed here are not only beneficial to neutral atom experiments, but could also be employed to improve the localization precision of trapped ions for ultra precise force sensing.

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Section: Noise Sources In the Detection Processmentioning

confidence: 96%

Super-resolution microscopy of single atoms in optical lattices

et al. 2016

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“…For instance, SNR improvements as large as 10 4 could be obtained for stand‐off distances of 100 m via filament‐generated air waveguides . The on‐board detection system could also benefit from recent developments of electron‐multiplying CCDs (EMCCDs), which have enabled a new generation of detectors with low readout noise and high quantum efficiency . Issues during space‐qualification were the device tolerance to radiation, charge transfer efficiency at low signal levels and gain degradation at the multiplication register .…”

Section: Technical Considerationsmentioning

confidence: 99%

Spaceborne laser filamentation for atmospheric remote sensing

Dicaire

Jukna

Praz

et al. 2016

Laser & Photonics Reviews

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A proof-of-concept of space-borne laser filamentation for atmospheric remote sensing is presented. The remote generation of laser filaments from an Earth-orbiting satellite is shown by numerical simulations to be theoretically possible for a large range of laser parameters. The model includes a realistic representation of the stratified atmosphere and accounts for multi-species ionization and the dependence of air density upon the molecule type and altitude profile. The remote generation of a white light continuum extending from 350 nm to 1.1 μm within the filament is demonstrated, and hereby proposed as an atmospheric in-situ light source for monitoring greenhouse gases and pollutants on a global scale by light detection and ranging (lidar) techniques. Scaling laws are also derived for estimating the filament altitude as a function of peak pulse power (3 GW-3 TW), beam radii (10-200 cm) and for three different curvatures (300, 390, 500 km) for femtosecond infrared (800 nm) pulses. We find that operating conditions for remote supercontinuum generation are already available with current ground-based mobile laser technology and within reach of future space laser systems.

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“…Many studies have also been performed concerning their operation [7] [26], radiation hardness [8] and applicability to future space instrumentation [9]. However there has not been a detailed detailed study into the process of charge transfer within the multiplication register.…”

Section: Multiplication Registermentioning

confidence: 99%

Simulations of charge transfer in Electron Multiplying Charge Coupled Devices

Bush¹,

Stefanov²,

Hall³

et al. 2014

J. Inst.

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ABSTRACT:Electron Multiplying Charge Coupled Devices (EMCCDs) are a variant of traditional CCD technology well suited to applications that demand high speed operation in low light conditions. On-chip signal amplification allows the sensor to effectively suppress the noise introduced by readout electronics, permitting sub-electron read noise at MHz pixel rates. The devices have been the subject of many detailed studies concerning their operation, however there has not been a study into the transfer and multiplication process within the EMCCD gain register. Such an investigation has the potential to explain certain observed performance characteristics, as well as inform further optimisations to their operation. In this study, the results from simulation of charge transfer within an EMCCD gain register element are discussed with a specific focus on the implications for serial charge transfer efficiency (CTE). The effects of operating voltage and readout speed are explored in context with typical operating conditions. It is shown that during transfer, a small portion of signal charge may become trapped at the semiconductor-insulator interface that could act to degrade the serial CTE in certain operating conditions.

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Electron-multiplying CCDs for future space instruments

Cited by 13 publications

References 9 publications

Super-resolution microscopy of single atoms in optical lattices

Super-resolution microscopy of single atoms in optical lattices

Spaceborne laser filamentation for atmospheric remote sensing

Simulations of charge transfer in Electron Multiplying Charge Coupled Devices

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