Dr. Julie Abergel Profile

Dr. Julie Abergel

Researcher at CEA-LETI

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Author

Publications (10)

Proceedings Article | 12 July 2023 Open Access

HgCdTe APD detector module for deep space optical communications

S. Gout, A. Coquiard, A. Vandeneyde, J. Rothman, S. Pes, J. Abergel, G. Badano, G. Lasfargues, J.-A. Nicolas, J.-L. Santailler, S. Mejri

Proceedings Volume 12777, 127774B (2023) https://doi.org/10.1117/12.2690826

KEYWORDS: Avalanche photodetectors, Mercury cadmium telluride, Pulse signals, Quantum channels, Deep space optical communications, Signal detection, Photodetectors, Astronomical imaging, Single photon detectors, Picosecond phenomena

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Proceedings Article | 12 July 2023 Open Access

High dynamic range HgCdTe APD detector dedicated to LiDAR applications: design and test results

Eric de Borniol, Julie Abergel, Giacomo Badano, Jean-Alain Nicolas, Jean-Pierre Rostaing, Johan Rothman

Proceedings Volume 12777, 127772C (2023) https://doi.org/10.1117/12.2689980

KEYWORDS: Readout integrated circuits, Avalanche photodetectors, Pulsed laser operation, LIDAR, Photons, Pulse signals, Mercury cadmium telluride, Interference (communication), Capacitance, Background noise

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LiDAR remote sensing of the atmosphere requires a photons detection chain with a high sensitivity and a high dynamic range associated with a good temporal resolution. To meet these requirements, a specific CMOS read out circuit (ROIC) has been studied, design and realized at CEA/Leti within the frame of the H2020 project HOLDON. This ROIC is based on a CTIA amplifier with four different current/voltage conversion gain thanks to capacitance ranging from 10 fF to 10 pf. Other functionalities like on chip sampling, auto-reset or programmable low pass filtering have been implemented to optimize the detector for different measurement chain. Based on this circuit architecture, two versions of the ROIC with different way to connect the circuit to the photodiodes have been manufactured and tested. The first one is design to be directly hybridized to a small array of photodiodes with a format imposed by the ROIC design in term of pixel pitch and array size. For the second ROIC version, the photodiode array is hybridized to an interconnection circuit used as a fan-out of electrical connections to a bonding pad. This module is then wire-bonded to the ROIC to get the final detector assembly. This configuration allows us to couple the ROIC with different APD geometry adapted to a specific application need. The performances of one of the first hybridized devices were previously presented during ICSO 2020[1]. For this review, we focus on the second version of the ROIC. The tested detector module is made of an array of 76 HgCdTe APD in parallel with a pixel pitch of 15 µm. The array forms a 150 µm diameter macro-photodiode. The device was tested at 78K within a liquid nitrogen cooled cryostat. Under photon flux, we have obtained a linear response of the device with an incoming flux varying over more than six orders of magnitude without varying the APD gain. This wild dynamic is associated with a high sensitivity with a noise standing below the unique photon. The response to a brief laser pulse gives a rise time ranging from 175 ns for the highest CTIA gain to 6 ns for the lowest CTIA gain.

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Proceedings Article | 11 June 2021 Open Access

Reaching GHz single photon detection rates with HgCdTe avalanche photodiodes detectors

S. Pes, J. Rothman, P. Bleuet, S. Gout, P. Ballet, J.-L. Santailler, L. Mathieu, J. Abergel, J.-A. Nicolas, J.-P. Rostaing, S. Renet, A. Vandeneynde, J. Le Perchec

Proceedings Volume 11852, 118525S (2021) https://doi.org/10.1117/12.2600012

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Proceedings Article | 11 June 2021 Open Access

HgCdTe APDs detector developments for high speed, low photon number and large dynamic range photo-detection

Johan Rothman, S. Renet, J.-A. Nicolas, J. le Perchec, G. Badano, P. Bleuet, P. Castelein, S. Gout, P. Ballet, E. De Borniol, S. Pes, A. Dumas, B. Hoareau, L. Mathieu, J.-P. Rostaing, J. Abergel, X. Baudry, J.-L. Santailler

Proceedings Volume 11852, 118520F (2021) https://doi.org/10.1117/12.2599159

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Proceedings Article | 27 April 2020 Presentation

Discussion around IR material, detection structure and measurement issues to go toward small pixel pitch IR HOT FPAs (Conference Presentation)

Olivier Gravrand, Alexandre Ferron, François Boulard, Adrien Yeche, Sylvette Bisotto, Florent Rochette, Julie Abergel

Proceedings Volume 11407, 114070W (2020) https://doi.org/10.1117/12.2564572

KEYWORDS: Modulation transfer functions, Infrared imaging, Infrared materials, Quantum efficiency, Sensors, Staring arrays, Image resolution, Image sensors, Infrared sensors, Diffusion

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Proceedings Article | 12 July 2019 Open Access

HgCdTe APDs detector developments at CEA/Leti for atmospheric lidar and free space optical communications

Johan Rothman, Sylvain Gout, Jean-Alain Nicolas, Stephanie Huet, Pierre Bleuet, Julie Abergel, Gilles Lasfargues, Lydie Mathieu, Jean-Pierre Rostaing, Pierre Castelein, Kévin Aubaret, Olivier Saint-Pé

Proceedings Volume 11180, 111803S (2019) https://doi.org/10.1117/12.2536055

KEYWORDS: Sensors, Avalanche photodetectors, Mercury cadmium telluride, LIDAR, Photons, Detector development, Signal detection, Interference (communication), Atmospheric sensing, Free space optics

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Proceedings Article | 7 May 2019 Presentation + Paper

Development of sub-10µm pitch HgCdTe infrared detectors

J. Abergel, F. Rochette, S. Gout, X. Baudry, C. Grangier, A. Even, J.-L. Santailler, D. Giotta, R. Obrecht, T. Pellerin, L. Bonnefond, J. Rothman, S. Bisotto

Proceedings Volume 11002, 1100222 (2019) https://doi.org/10.1117/12.2520030

KEYWORDS: Diodes, Modulation transfer functions, Mercury cadmium telluride, Infrared detectors, Sensors

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Proceedings Article | 7 May 2019 Presentation + Paper

7.5µm and 5µm pitch IRFPA developments in MWIR at CEA-LETI

S. Bisotto, J. Abergel, B. Dupont, A. Ferron, O. Mailliart, J.-A. Nicolas, S. Renet, F. Rochette, J.-L. Santailler

Proceedings Volume 11002, 110021C (2019) https://doi.org/10.1117/12.2519330

KEYWORDS: Readout integrated circuits, Staring arrays, Diodes, Indium, Modulation transfer functions, Mid-IR, Liquid phase epitaxy, Video, Reliability, Mercury cadmium telluride

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Proceedings Article | 27 January 2017 Presentation + Paper

HgCdTe APDs for low-photon number IR detection

O. Boulade, J. Rothman, E. de Borniol, G. Lasfargues, J. Abergel, X. Lefoule, A. Dumas, F. Gibert, B. Delacourt

Proceedings Volume 10111, 1011119 (2017) https://doi.org/10.1117/12.2256175

KEYWORDS: Mercury cadmium telluride, Avalanche photodetectors, Single photon, Sensors, Imaging spectroscopy, LIDAR, Wavefronts, Mid-IR, Quantum cryptography, Quantum information, Readout integrated circuits, Photons, Electrons, Signal to noise ratio, Quantum efficiency, Staring arrays

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Proceedings Article | 29 October 2015 Paper

HgCdTe APDs for free space optical communications

J. Rothman, J. Abergel, G. Lasfargues

Proceedings Volume 9647, 96470N (2015) https://doi.org/10.1117/12.2197171

KEYWORDS: Mercury cadmium telluride, Avalanche photodetectors, Free space optics, Free space optical communications, Avalanche photodiodes, Optical components, Free space, Telecommunications, Laser communications, Data communications, Solid state lasers, Sensors, Electrons, LIDAR, Optical amplifiers, Diffusion

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Showing 5 of 10 publications

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