Dr. Christian C. K. Ketchazo Profile

Dr. Christian C. K. Ketchazo

at Commissariat à l'Énergie Atomique

SPIE Involvement:

Author

Publications (11)

Proceedings Article | 27 August 2024 Presentation + Paper

Very low-flux short-wave infrared FPAs developments at LETI for astronomy applications

T. Le Goff, O. Gravrand, C. Lobre, O. Boulade, C. Ketchazo, T. Pichon

Proceedings Volume 13103, 131030Z (2024) https://doi.org/10.1117/12.3020932

KEYWORDS: Dark current, Readout integrated circuits, Sensors, Diodes, Astronomy, Photodiodes, Infrared detectors, Astronomical detectors, Mercury cadmium telluride

Read Abstract +

Proceedings Article | 7 June 2024 Presentation + Paper

Low-flux long-wave infrared FPAs developments at LETI for science applications

T. Le Goff, C. Ketchazo, C. Lobre, O. Boulade, T. Pichon, O. Gravrand, B. Horeau, G. Badano

Proceedings Volume 13046, 130460W (2024) https://doi.org/10.1117/12.3015461

KEYWORDS: Dark current, Sensors, Readout integrated circuits, Capacitance, Diodes, Mercury cadmium telluride, Long wavelength infrared, Photons, Astronomical detectors, Infrared detectors

Read Abstract +

Proceedings Article | 29 August 2022 Poster + Paper

Quantix and Intrapix: test benches dedicated to quantum efficiency measurement and intra-pixel response of detectors from VIS to LWIR

T. Pichon, A. Bounab, C. Cervera, C. Delisle, S. Derelle, D. Dubreuil, B. Horeau, E. Huard, C. Ketchazo, V. Moreau, P. Mulet, M. Lortholary, T. Orduna, L. Provost, S. Ronayette, O. Tellier, O. Boulade

Proceedings Volume 12191, 121912I (2022) https://doi.org/10.1117/12.2630232

KEYWORDS: Sensors, Quantum efficiency, Calibration, Infrared sensors

Read Abstract +

Proceedings Article | 27 August 2022 Poster + Paper

MAJIS IR channel: 3) performance of the focal plane unit

John Carter, Paolo Haffoud, Yves Langevin, François Poulet, Christian Ketchazo, Pierre Guiot, Cydalise Dumesnil, Claudia Ruiz de Galarreta Fanjul, Antoine Arondel, Vincent Carlier, Jean-Pierre Dubois, Ludovic Gonnod, Cyrille Hannou, Véronique Hervier, Jean-Christophe Le Clec'h, Benoit Lecomte, Gilles Morinaud, Xueyan Zhang

Proceedings Volume 12180, 121803A (2022) https://doi.org/10.1117/12.2629828

KEYWORDS: Sensors, Optical filters, Jupiter, Calibration, Infrared imaging

Read Abstract +

Proceedings Article | 27 August 2022 Poster + Paper

MAJIS VIS-NIR channel: performances of the focal plane unit - flight model

Paolo Haffoud, Antoine Arondel, David Bolsée, Vincent Carlier, John Carter, Miriam Cisneros-González, Jean-Pierre Dubois, Cydalise Dumesnil, Gianrico Filacchione, Ludovic Gonnod, Cyrille Hannou, Véronique Hervier, Özgür Karatekin, Christian Ketchazo, Yves Langevin, Jean-Christophe Le Clec'h, Benoit Lecomte, Gilles Morinaud, Nuno Pereira, Giuseppe Piccioni, Ann-Carine Vandaele, Lionel Van Laeken, Mathieu Vincendon, Francois Poulet

Proceedings Volume 12180, 1218039 (2022) https://doi.org/10.1117/12.2628884

KEYWORDS: Sensors, Quantum efficiency, Staring arrays, Signal detection, Jupiter, Performance modeling, Spectroscopy, Signal to noise ratio, Electrons

Read Abstract +

Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Characterization facility for the MAJIS/JUICE VIS-NIR FM and SM detectors

David Bolsée, Lionel Van Laeken, Miriam Cisneros-González, Nuno Pereira, Cédric Depiesse, Lars Jacobs, Ann Vandaele, Birgit Ritter, Samuel Gissot, Özgür Karatekin, François Poulet, Yves Langevin, Cydalise Dumesnil, Jean Pierre Dubois, Antoine Arondel, Paolo Haffoud, Christian Ketchazo, Véronique Hervier

Proceedings Volume 11443, 114437H (2020) https://doi.org/10.1117/12.2576319

KEYWORDS: Sensors, Frequency modulation, Fermium, Jupiter, Radiometry, Radio optics, Quantum efficiency, Data modeling, Temperature metrology, Spectroscopy

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

MAJIS/JUICE VIS-NIR FM and SM detectors characterization

Miriam Cisneros-González, David Bolsée, Nuno Pereira, Lionel Van Laeken, Cédric Depiesse, Lars Jacobs, Séverine Robert, Ann Vandaele, Samuel Gissot, Özgür Karatekin, François Poulet, Yves Langevin, Cydalise Dumesnil, Jean Pierre Dubois, Antoine Arondel, Paolo Haffoud, Christian Ketchazo, Veronique Hervier, Bruno Crane

Proceedings Volume 11443, 114431L (2020) https://doi.org/10.1117/12.2562063

KEYWORDS: Fermium, Frequency modulation, Sensors, Jupiter, Data modeling, Quantum efficiency, Spectroscopy, Imaging spectroscopy, Infrared imaging, Infrared spectroscopy

Read Abstract +

Proceedings Article | 25 September 2017 Open Access

Intrapixel measurement techniques on large focal plane arrays for astronomical applications: a comparative study

C. Ketchazo, T. Viale, O. Boulade, F. de la Barrière, D. Dubreuil, L. Mugnier, V. Moreau, N. Guérineau, P. Mulet, G. Druart, C. Delisle

Proceedings Volume 10562, 105623D (2017) https://doi.org/10.1117/12.2296125

KEYWORDS: Sensors, Modulation transfer functions, Signal to noise ratio, Astronomical imaging, Staring arrays, Point spread functions, Laser range finders, Astronomy, Fourier transforms, Charge-coupled devices

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 8 August 2016 Paper

High accuracy measurements of the intrapixel sensitivity of VIS to LWIR astronomical detectors: experimental demonstration

T. Viale, C. Ketchazo, N. Guérineau, O. Boulade, F. de la Barrière, V. Moreau, L. Mugnier, D. Dubreuil, A. Bonnefois, C. Delisle, G. Druart, P. Mulet

Proceedings Volume 9915, 991517 (2016) https://doi.org/10.1117/12.2232831

KEYWORDS: Point spread functions, Sensors, Long wavelength infrared, Spatial frequencies, Deconvolution, Deconvolution, Signal to noise ratio, Error analysis, Collimators, Mirrors, Staring arrays

Read Abstract +

Proceedings Article | 29 July 2016 Paper

The latest results from DICE (Detector Interferometric Calibration Experiment)

A. Crouzier, F. Malbet, F. Hénault, A. Léger, C. Cara, J. M. Le Duigou, O. Preis, P. Kern, A. Delboulbe, G. Martin, P. Feautrier, E. Stadler, S. Lafrasse, S. Rochat, C. Ketchazo, M. Donati, Eric Doumayrou, P. O. Lagage, M. Shao, R. Goullioud, B. Nemati, C. Zhai, E. Behar, S. Potin, M. Saint-Pe, J. Dupont

Proceedings Volume 9904, 99045G (2016) https://doi.org/10.1117/12.2234304

KEYWORDS: Interferometry, Calibration, Sensors, Metrology, Stars, Charge-coupled devices, Electroluminescent displays, Stray light, Point spread functions, Planets

Read Abstract +

Proceedings Article | 23 July 2014 Paper

A new technique of characterization of the intrapixel response of astronomical detectors

C. Ketchazo, T. Viale, O. Boulade, G. Druart, V. Moreau, L. Mugnier, D. Dubreuil, S. Derelle, S. Ronayette, N. Guérineau, M. Berthe

Proceedings Volume 9154, 91541Y (2014) https://doi.org/10.1117/12.2055721

KEYWORDS: Sensors, Point spread functions, Optical transfer functions, Staring arrays, Spatial frequencies, Mirrors, Near infrared, Charge-coupled devices, Astronomical detectors, Modulation transfer functions

Read Abstract +

Showing 5 of 11 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years