Dr. Louis R. Rodriguez Profile

Dr. Louis R. Rodriguez

at CEA

SPIE Involvement:

Author

Publications (38)

Proceedings Article | 31 August 2022 Presentation + Paper

Presentation + Paper

Highly sensitive and wide dynamic range polarimetric detectors arrays in the submillimeter domain

L. Rodriguez, A. Adami, A. Aliane, X. de la Broïse, C. Delisle, A. Demonti, D. Desforge, S. Dubos, L. Dussopt, C. Gennet, V. Goudon, O. Gevin, H. Kaya, G. Lasfargues, J. Martignac, X-F. Navick, A. Poglitsch, V. Reveret, M. Sauvage, T. Tollet, F. Visticot

Proceedings Volume 12190, 121900P (2022) https://doi.org/10.1117/12.2630223

KEYWORDS: Sensors, Absorption, Silicon, Polarization, Polarimetry, Manufacturing, Detector arrays, Bolometers, Resistors, Resistance

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Proceedings Article | 31 August 2022 Presentation + Paper

Presentation + Paper

On-chip spectroscopic solutions for polarimetric bolometer arrays in submillimeter astronomy

Timothée Tollet, Sophie Bounissou, Abdelkader Aliane, Cyrille Delisle, Laurent Dussopt, Valérie Goudon, Hacile Kaya, Gilles Lasfargues, Albrecht Poglitsch, Vincent Revéret, Louis Rodriguez

Proceedings Volume 12190, 121900H (2022) https://doi.org/10.1117/12.2630087

KEYWORDS: Fabry–Perot interferometers, Silicon, Bolometers, Reflectivity, Prototyping, Spectrometers, Sensors, Dielectrics, Absorption, Astrophysics, Submillimeter telescopes

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Proceedings Article | 29 August 2022 Presentation

Presentation

A submillimeter polarimetric camera for future space missions

Vincent Revéret, Philippe André, Louis Rodriguez, Samuel Ronayette, Marc Sauvage

Proceedings Volume 12180, 121801S (2022) https://doi.org/10.1117/12.2630420

KEYWORDS: Polarimetry, Space observatories, Cameras, Bolometers, Sensors, Polarization, Space mirrors, Silicon, Picture Archiving and Communication System, Mirrors

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Proceedings Article | 30 December 2020 Presentation + Paper

Presentation + Paper

An optical test facility for the B-BOP bolometers of the SPICA mission

Camille Gennet, Xavier-François Navick, Daniel Desforge, Didier Dubreuil, Jérôme Martignac, Albrecht Pöglitsh, Vincent Revéret, Louis Rodriguez

Proceedings Volume 11453, 114530I (2020) https://doi.org/10.1117/12.2561330

KEYWORDS: Bolometers, Optical testing, Space observatories, Space operations, Planets, Stars, Galactic astronomy, Polarization, Photon polarization, Light sources

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Proceedings Article | 29 December 2020 Poster + Paper

Poster + Paper

B-BOP: the SPICA imaging polarimeter

V. Revéret, M. Sauvage, Obaïd Adami, A. Aliane, M. Berthé, S. Bounissou, X. de la Broïse, M. Chimeno, A. Demonti, C. Delisle, E. Doumayrou, L. Duband, D. Dubreuil, L. Dussopt, P.-A. Frugier, C. Gennet, O. Gevin, V. Goudon, H. Kaya, B. Marquet, J. Martignac, S. Martin, F. Najarro, X.-F. Navick, J. Perez, J.-Y. Plesseria, A. Poglitsch, L. Rodriguez, J. Torres Redondo, F. Visticot

Proceedings Volume 11443, 114436P (2020) https://doi.org/10.1117/12.2562419

KEYWORDS: Bolometers, Sensors, Polarization, Polarimetry, Silicon, Space observatories, Mirrors, Magnetism, Semiconductors, Picture Archiving and Communication System

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Proceedings Article | 12 July 2019 Open Access

Open Access

Paper

PILOT optical alignment

B. Mot, G. Roudil, Y. Longval, P. Ade, Y. André, J. Aumont, L. Baustista, J. -P. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A. Caillat, M. Charra, M. Chaigneau, B. Crane, J. -P. Crussaire, F. Douchin, E. Doumayrou, J. -P. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B. Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J. -P. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J. -P. Torre, C. Tucker

Proceedings Volume 11180, 111806Z (2019) https://doi.org/10.1117/12.2536170

KEYWORDS: Mirrors, Optical alignment, Telescopes, Thermal modeling, Galactic astronomy, Polarization, Off axis mirrors, Image quality, Photometry, Point spread functions

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Proceedings Article | 10 July 2018 Presentation

Presentation

BRAHMS: polarimetric bolometer arrays for the SPICA observatory camera (Conference Presentation)

Louis Rodriguez, Albrecht Poglitsch, Abdelkader Aliane, Vincent Revéret, Olivier Gevin, Valérie Goudon, Sophie Bounissou, Obaïd-Allah Adami, Xavier de la Broïse, Jérôme Martignac, Cyrille Delisle, Jean-Luc Sauvageot, laurent Dussopt, Hanan Thabet

Proceedings Volume 10708, 107080W (2018) https://doi.org/10.1117/12.2312622

KEYWORDS: Bolometers, Polarization, Polarimetry, Cameras, Observatories, Silicon, Wheatstone bridges, Sensors, Integrated circuits, Image processing

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In the last decades, a very large effort has been made to measure, with high sensitivity, the intensity and spectral contents of millimetric (mm) and submillimetric (submm) light from the Universe. Today this picture is in the way to be routinely completed by polarization measurements that give access to previously hidden processes, for example the traces of primordial gravitational waves in the case of CMB (mainly mm), or the effect of magnetic field for star formation mechanisms (submm and mm optical ranges). The classical way to measure the light polarization is to split the two components by a polarizer grid and record intensities with two conjugated detection setups. This approach implies the deployment of a complex instrument system, very sensitive to external constraints (vibrations, alinement, thermal expansion…), or internal ones: determine low degrees of polarization implies a large increase in sensitivity when compared with intensity measurements. The need of detector arrays, with in pixel polarization measurement capabilities, has been well understood for years: all the complexity being reported at the focal plane level. Subsequently, the instrument integration, verification and tests procedure is considerately alleviated, specially for space applications. All silicon bolometer arrays using the same micromachining techniques than the Herschel PACS modules are well suited for this type of development. New thermometers doped for 50 mK operations permit to achieve, with a new design, sensitivities close to the aW/√Hz. It is based on all-legs bolometers (ALB), where the absorbing, insulating and thermometric functions are made by the same suspended silicon structure. This ALB structure, with in this case a spiral design, permits to separate the absorption of the two electromagnetic components of the light polarization. Each pixel consists of four bolometer divided in two pairs, each sensitive to one direction of polarization. This permits to combine the bolometer bridges in a fully differential global structure with a Wheatstone bridge arrangement. Total intensity and polarization unbalance are available directly at the detector level, thanks to a cold readout circuit integrated in the detector structure. This combination of functions is achieved by above IC manufacture techniques (IC for Integrated Circuit). All these developments take place in the prospect of the joint JAXA-ESA SPICA project, to equip a 1344 pixels polarimetric and imaging camera covering three spectral bands (100, 200 and 350 µm).

Proceedings Article | 10 July 2018 Presentation

Presentation

Spectroscopy on chip: a new design for semiconductor bolometers to include spectroscopy within the pixels (Conference Presentation)

Sophie Bounissou, Louis Rodriguez, Vincent Revéret, Albrecht Poglitsch

Proceedings Volume 10708, 107081Q (2018) https://doi.org/10.1117/12.2312543

KEYWORDS: Spectroscopy, Bolometers, Spectroscopes, Semiconductors, Sensors, Picture Archiving and Communication System, Space observatories, Silicon, Electromagnetism, Absorption

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Proceedings Article | 9 July 2018 Paper

Paper

Latest results and prospects of the ArTeMiS camera on APEX

M. Talvard, V. Revéret, Y. Le-Pennec, Ph. André, A. Arnaud, L. Clerc, C. de Breuck, C. Delisle, E. Doumayrou, L. Duband, D. Dubreuil, L. Dumaye, E. Ercolani, P. Gallais, M. Lortholary, J. Martignac, J. Relland, L. Rodriguez, F. Roussel, F. Schuller, F. Visticot

Proceedings Volume 10708, 1070838 (2018) https://doi.org/10.1117/12.2313300

KEYWORDS: Cameras, Sensors, Space telescopes, Telescopes, Staring arrays, Space operations, Silicon, Bolometers, Optical filters, Polarization

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Proceedings Article | 9 July 2018 Paper

Paper

Fabrication and characterization of cooled silicon bolometers for mm wave detection

V. Goudon, A. Aliane, C. Vialle, W. Rabaud, S. Pocas, H. Kaya, R. Torrecillas, J.-L. Ouvrier-Buffet, L. Dussopt, P. Agnese, S. Becker, S. Bounissou, O.-A. Adami, V. Reveret, J.-L. Sauvageot, L. Rodriguez

Proceedings Volume 10708, 107083O (2018) https://doi.org/10.1117/12.2313328

KEYWORDS: Bolometers, Silicon, Resistance, Sensors, Semiconducting wafers, Absorption, Polarization, Astronomy, Fabrication

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CEA has a long history of customizing optoelectronic components for space and astronomy applications. Based on this expertise, we are undertaking the development of cooled silicon bolometers for millimetre-wave (mm-wave) polarization detection in the next generation of space astronomy missions such as SPICA. Silicon bolometer technology has been demonstrated successfully in space conditions through the Herschel mission. There are many benefits of this technology such as the use of a simple and low-power read-out circuit that can be integrated below the detector array in an above-IC (Integrated Circuit) integration scheme. The advanced integration in a large array and the fabrication process based on microelectronics techniques are key challenges for these developments. This work presents the early results on the design, the fabrication and the first characterization of an innovative pixel for mm-wave polarization detection. The aim is to have an adapted absorption around λ=1.5 mm. These bolometers are composed of an absorbing layer and a thermometer, which are thermally insulated from the substrate. To increase the sensitivity, these detectors are working at very low temperature typically between 50 and 100 mK. The suspended thermometer is made of silicon implanted with Phosphorus and Boron species, and we optimized the design to have a high sensitivity with a 3D Variable Range Hopping conduction (Efros law) and a low 1/f noise at low temperature. The heat capacity of the bolometer is optimized by using a meander shape of the thermometer together with superconducting Ti/TiN thin films for the electromagnetic wave absorption. This sensor is implemented on a standard SOI substrate. Measurements of test structures at room temperature, and first results at very low temperature have been performed to evaluate the electrical performances of the fabricated detectors. The mechanical behaviour of released structures, including pixels with a pitch of 1200μm and 600μm, is presented and discussed.

Proceedings Article | 17 November 2017 Open Access

Open Access

Paper

PILOT: optical performance and end-to-end characterisation

Y. Longval, R. Misawa, P. Ade, Y. André, P. de Bernardis, F. Bousquet, M. Bouzit, V. Buttice, M. Charra, B. Crane, J. Dubois, C. Engel, M. Griffin, P. Hargrave, B. Leriche, S. Maestre, C. Marty, W. Marty, S. Masi, B. Mot, J. Narbonne, F. Pajot, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, O. Simonella, M. Salatino, G. Savini, C. Tucker, J.-P. Bernard

Proceedings Volume 10563, 105635X (2017) https://doi.org/10.1117/12.2304278

KEYWORDS: Point spread functions, Polarization, Mirrors, Photometry, Polarizers, Collimators, Sensors, Optical testing, Space telescopes, Telescopes

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PILOT (Polarized Instrument for the Long-wavelength Observations of the Tenuous ISM), is a balloon-borne astronomy experiment dedicated to study the polarization of dust emission from the diffuse ISM in our Galaxy [1]. The observations of PILOT have two major scientific objectives. Firstly, they will allow us to constrain the large-scale geometry of the magnetic field in our Galaxy and to study in details the alignment properties of dust grains with respect to the magnetic field. In this domain, the measurements of PILOT will complement those of the Planck satellite at longer wavelengths. In particular, they will bring information at a better angular resolution, which is critical in crowded regions such as the Galactic plane. They will allow us to better understand how the magnetic field is shaping the ISM material on large scale in molecular clouds, and the role it plays in the gravitational collapse leading to star formation. Secondly, the PILOT observations will allow us to measure for the first time the polarized dust emission towards the most diffuse regions of the sky, where the measurements are the most easily interpreted in terms of the physics of dust. In this particular domain, PILOT will play a role for future CMB missions similar to that played by the Archeops experiment for Planck. The results of PILOT will allow us to gain knowledge about the magnetic properties of dust grains and about the structure of the magnetic field in the diffuse ISM that is necessary to a precise foreground subtraction in future polarized CMB measurements. The PILOT measurements, combined with those of Planck at longer wavelengths, will therefore allow us to further constrain the dust models. The outcome of such studies will likely impact the instrumental and technical choices for the future space missions dedicated to CMB polarization.

The PILOT instrument will allow observations in two photometric channels at wavelengths 240 μm and 550 μm, with an angular resolution of a few arcminutes. We will make use of large format bolometer arrays, developed for the PACS instrument on board the Herschel satellite. With 1024 detectors per photometric channel and photometric band optimized for the measurement of dust emission, PILOT is likely to become the most sensitive experiment for this type of measurements. The PILOT experiment will take advantage of the large gain in sensitivity allowed by the use of large format, filled bolometer arrays at frequencies more favorable to the detection of dust emission.

This paper presents the optical design, optical characterization and its performance. We begin with a presentation of the instrument and the optical system and then we summarise the main optical tests performed. In section III, we present preliminary end-to-end test results.

Proceedings Article | 25 September 2017 Open Access

Open Access

Paper

Pilot optical alignment and its in flight performances

B. Mot, Y. Longval, P. Ade, Y. André, J. Aumont, L. Baustista, J.-Ph. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A Caillat, M. Charra, M. Chaigneau, C. Coudournac, B. Crane, J.-P. Crussaire, F. Douchin, E. Doumayrou, J. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J.-M. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J.-P. Torre, C. Tucker, G. Versepuech

Proceedings Volume 10562, 105624C (2017) https://doi.org/10.1117/12.2297590

KEYWORDS: Mirrors, Telescopes, Space telescopes, Optical alignment, Photometry, Astronomical imaging, Point spread functions, Thermography, Image quality, Thermal modeling

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Proceedings Article | 29 July 2016 Paper

Paper

PILOT optical alignment

Y. Longval, B. Mot, P. Ade, Y. André, J. Aumont, L. Baustista, J.-Ph. Bernard, N. Bray, P. de Bernardis, O. Boulade, F. Bousquet, M. Bouzit, V. Buttice, A. Caillat, M. Charra, M. Chaigneau, B. Crane, J.-P. Crussaire, F. Douchin, E. Doumayrou, J.-P. Dubois, C. Engel, P. Etcheto, P. Gélot, M. Griffin, G. Foenard, S. Grabarnik, P.. Hargrave, A. Hughes, R. Laureijs, Y. Lepennec, B. Leriche, S. Maestre, B. Maffei, J. Martignac, C. Marty, W. Marty, S. Masi, F. Mirc, R. Misawa, J. Montel, L. Montier, J. Narbonne, J-M. Nicot, F. Pajot, G. Parot, E. Pérot, J. Pimentao, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, O. Simonella, M. Saccoccio, P. Tapie, J. Tauber, J.-P. Torre, C. Tucker

Proceedings Volume 9904, 990458 (2016) https://doi.org/10.1117/12.2232892

KEYWORDS: Optical alignment, 3D metrology, Space telescopes, Mirrors, Photometry, Telescopes, Thermography, Spherical lenses, Thermal modeling, Point spread functions

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Proceedings Article | 2 August 2014 Paper

Paper

TALC: a new deployable concept for a 20m far-infrared space telescope

Gilles Durand, Marc Sauvage, Aymeric Bonnet, Louis Rodriguez, Samuel Ronayette, Pierre Chanial, Loris Scola, Vincent Révéret, Hervé Aussel, Michael Carty, Matthis Durand, Lancelot Durand, Pascal Tremblin, Eric Pantin, Michel Berthe, Jérôme Martignac, Frédérique Motte, Michel Talvard, Vincent Minier, Pascal Bultel

Proceedings Volume 9143, 91431A (2014) https://doi.org/10.1117/12.2055895

KEYWORDS: Telescopes, Space telescopes, Mirrors, Talc, Skin, Satellites, Carbon, Solids, Plasma, Interferometers

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TALC, Thin Aperture Light Collector is a 20 m space observatory project exploring some unconventional optical solutions (between the single dish and the interferometer) allowing the resolving power of a classical 27 m telescope. With TALC, the principle is to remove the central part of the prime mirror dish, cut the remaining ring into 24 sectors and store them on top of one-another. The aim of this far infrared telescope is to explore the 600 μm to 100 μm region. With this approach we have shown that we can store a ring-telescope of outer diameter 20m and ring thickness of 3m inside the fairing of Ariane 5 or Ariane 6. The general structure is the one of a bicycle wheel, whereas the inner sides of the segments are in compression to each other and play the rule of a rim. The segments are linked to each other using a pantograph scissor system that let the segments extend from a pile of dishes to a parabolic ring keeping high stiffness at all time during the deployment. The inner corners of the segments are linked to a central axis using spokes as in a bicycle wheel. The secondary mirror and the instrument box are built as a solid unit fixed at the extremity of the main axis. The tensegrity analysis of this structure shows a very high stiffness to mass ratio, resulting into 3 Hz Eigen frequency. The segments will consist of two composite skins and honeycomb CFRP structure build by replica process. Solid segments will be compared to deformable segments using the controlled shear of the rear surface. The adjustment of the length of the spikes and the relative position of the side of neighbor segments let control the phasing of the entire primary mirror. The telescope is cooled by natural radiation. It is protected from sun radiation by a large inflatable solar screen, loosely linked to the telescope. The orientation is performed by inertia-wheels. This telescope carries a wide field bolometer camera using cryocooler at 0.3K as one of the main instruments. This telescope may be launched with an Ariane 6 rocket up to 800 km altitude, and use a plasma stage to reach the Lagrange 2 point within 18 month. The plasma propulsion stage is a serial unit also used in commercial telecommunication satellites. When the plasma launch is completed, the solar panels will be used to provide the power for communication, orientation and power the cryo-coolers for the instruments. The guide-line for development of this telescope is to use similar techniques and serial subsystems developed for the satellite industry. This is the only way to design and manufacture a large telescope at a reasonable cost.

Proceedings Article | 2 August 2014 Paper

Paper

The science case and data processing strategy for the Thinned Aperture Light Collector (TALC): a project for a 20m far-infrared space telescope

Marc Sauvage, Pierre Chanial, Gilles Durand, Louis Rodriguez, Jean-Luc Starck, Samuel Ronayette, Hervé Aussel, Vincent Minier, Frédérique Motte, Eric Pantin, Florent Sureau, Robin Terrisse

Proceedings Volume 9143, 91431B (2014) https://doi.org/10.1117/12.2055557

KEYWORDS: Talc, Telescopes, Space telescopes, Point spread functions, Signal to noise ratio, Electroluminescent displays, Galactic astronomy, Spatial resolution, Stars, Signal processing

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The future of far-infrared observations rests on our capacity to reach sub-arcsecond angular resolution around 100 μm, in order to achieve a significant advance with respect to our current capabilities. Furthermore, by reaching this angular resolution we can bridge the gap between capacities offered by the JWST in the near infrared and those allowed by ALMA in the submillimeter, and thus benefit from similar resolving capacities over the whole wavelength range where interstellar dust radiates and where key atomic and molecular transitions are found. In an accompanying paper,¹ we present a concept of a deployable annular telescope, named TALC for Thinned Aperture Light Collector, reaching 20m in diameter. Being annular, this telescope features a main beam width equivalent to that of a 27m telescope, i.e. an angular resolution of 0.92" at 100 μm. In this paper we focus on the science case of such a telescope as well on the aspects of unconventional data processing that come with this unconventional optical configuration. The principal science cases of TALC revolve around its imaging capacities, that allow resolving the Kuiper belt in extra-solar planetary systems, or the filamentary scale in star forming clouds all the way to the Galactic Center, or the Narrow Line Region in Active Galactic Nuclei of the Local Group, or breaking the confusion limit to resolve the Cosmic Infrared Background. Equipping this telescope with detectors capable of imaging polarimetry offers as well the extremely interesting perspective to study the influence of the magnetic field in structuring the interstellar medium. We will then present simulations of the optical performance of such a telescope. The main feature of an annular telescope is the small amount of energy contained in the main beam, around 30% for the studied configuration, and the presence of bright diffraction rings. Using simulated point spread functions for realistic broad-band filters, we study the observing performance of TALC in typical situations, i.e a field of point sources, and fields with emission power at every physical scales, taken to represent an extragalactic deep field observation and an interstellar medium observation. We investigate different inversion techniques to try and recover the information present in the input field. We show that techniques combining a forward modeling of the observation process and a reconstruction algorithm exploiting the concept of sparsity (i.e. related to the more general field of compressed sensing) represent a promising avenue to reach the angular resolution promised by the main beam of TALC.

Proceedings Article | 23 July 2014 Paper

Paper

PILOT: a balloon-borne experiment to measure the polarized FIR emission of dust grains in the interstellar medium

R. Misawa, J-Ph. Bernard, P. Ade, Y. André, P. de Bernardis, M. Bouzit, M. Charra, B. Crane, J. Dubois, C. Engel, M. Griffin, P. Hargrave, B. Leriche, Y. Longval, S. Maes, C. Marty, W. Marty, S. Masi, B. Mot, J. Narbonne, F. Pajot, G. Pisano, N. Ponthieu, I. Ristorcelli, L. Rodriguez, G. Roudil, M. Salatino, G. Savini, C. Tucker

Proceedings Volume 9153, 91531H (2014) https://doi.org/10.1117/12.2055506

KEYWORDS: Polarization, Point spread functions, Bolometers, Sensors, Polarizers, Magnetism, Mirrors, Collimators, Photometry, Galactic astronomy

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Proceedings Article | 23 July 2014 Paper

Paper

CNES detector developments from far-infrared to mm: status and roadmap

H. Geoffray, A. Monfardini, S. Marnieros, M. Piat, L. Rodriguez, A. Bardoux

Proceedings Volume 9153, 91531U (2014) https://doi.org/10.1117/12.2058069

KEYWORDS: Sensors, Bolometers, Multiplexing, Silicon, Electronics, Picture Archiving and Communication System, Detector development, Superconductors, Detector arrays, Capacitors

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Proceedings Article | 23 July 2014 Paper

Paper

The NIKA 2013-2014 observation campaigns: control of systematic effects and results

A. Catalano, R. Adam, A. Adane, P. Ade, P. André, A. Beelen, B. Belier, A. Benoît, A. Bideaud, N. Billot, N. Boudou, O. Bourrion, M. Calvo, G. Coiffard, B. Comis, A. D'Addabbo, F.-X. Désert, S. Doyle, J. Goupy, C. Kramer, S. Leclercq, J.-F. Macías-Pérez, J. Martino, P. Mauskopf, F. Mayet, A. Monfardini, F. Pajot, E. Pascale, L. Perotto, E. Pointecouteau, N. Ponthieu, V. Revéret, A. Ritacco, L. Rodriguez, G. Savini, K. Schuster, A. Sievers, C. Tucker, R. Zylka

Proceedings Volume 9153, 915302 (2014) https://doi.org/10.1117/12.2055403

KEYWORDS: Sensors, Polarization, Calibration, Telescopes, Cameras, Control systems, Modulation, Galaxy groups and clusters, Field programmable gate arrays, Opacity

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Proceedings Article | 23 July 2014 Paper

Paper

Optical design for the 450, 350, and 200 µm ArTeMiS camera

Didier Dubreuil, Jérôme Martignac, Jean Christian Toussaint, François Visticot, Cyrille Delisle, Pascal Gallais, Jean Le Pennec, Thierry Lerch, Philippe André, Michel Lortholary, Bruno Maffei, Vic Haynes, Norma Hurtado, Giampaolo Pisano, Vincent Revéret, Louis Rodriguez, Michel Talvard

Proceedings Volume 9153, 915319 (2014) https://doi.org/10.1117/12.2055531

KEYWORDS: Mirrors, Telescopes, Image quality, Point spread functions, Optics manufacturing, Optical design, Tolerancing, Diffraction, Cameras, Stray light

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ArTeMiS is a submillimeter camera planned to work simultaneously at 450 μm, 350 μm and 200 μm by use of 3 focal planes of, respectively, 8, 8 and 4 bolometric arrays, each one made of 16 x18 pixels. In July 2013, with a preliminary setting reduced to 4 modules and to the 350 μm band, ArTeMiS was installed successfully at the Cassegrain focus of APEX, a 12 m antenna located on the Chajnantor plateau, Chile. After the summary of the scientific requirements, we describe the main lines of the ArTeMiS nominal optical design with its rationale and performances. This optical design is highly constrained by the room allocation available in the Cassegrain cabin. It is an all-reflective design including a retractable pick off mirror, a warm Fore Optics to image the focal plane of the telescope inside the cryostat, and the cold optics. The large size of the field of view at the focal plane of the telescope, 72 mm x 134 mm for the 350 μm and 450 μm beams, leads to the use of biconical toroidal mirrors. In this way, the nominal image quality obtained on the bolometric arrays is only just diffraction limited at some corners of the field of view. To keep a final PSF as much uniform as possible across the field of view, we have used the technic of manufacturing by diamond turning to machine the mirrors. This approach, while providing high accuracy on the shape of the mirrors, made easier the control of the two sub units, the Fore Optics and the cold optics, in the visible domain and at room temperature. Moreover, the use of the similar material (Aluminium alloy 6061) for the optical bench and the mirrors with their mount ensures a homothetic shrinking during the cooling down. The alignment protocol, drew up at the early step of the study, is also presented. It required the implementation of two additional mechanisms inside the cryostat to check the optical axis of the cold optics, in the real conditions of operation of ArTeMiS. In this way, it was possible to pre-align the Fore Optics sub unit with respect to the cold optics. Finally, despite the high constraints of the operating conditions of APEX, this protocol allowed to align ArTeMiS with respect to the telescope in a single adjustment. The first images obtained on the sky, Saturn with its rings, are given.

Proceedings Article | 23 July 2014 Paper

Paper

The ArTeMiS wide-field sub-millimeter camera: preliminary on-sky performance at 350 microns

Vincent Revéret, Philippe André, Jean Le Pennec, Michel Talvard, Patrick Agnèse, Agnès Arnaud, Laurent Clerc, Carlos de Breuck, Jean-Charles Cigna, Cyrille Delisle, Eric Doumayrou, Lionel Duband, Didier Dubreuil, Luc Dumaye, Eric Ercolani, Pascal Gallais, Elodie Groult, Thierry Jourdan, Bernadette Leriche, Bruno Maffei, Michel Lortholary, Jérôme Martignac, Wilfried Rabaud, Johan Relland, Louis Rodriguez, Aurélie Vandeneynde, François Visticot

Proceedings Volume 9153, 915305 (2014) https://doi.org/10.1117/12.2055985

KEYWORDS: Telescopes, Cameras, Sensors, Electronics, Bolometers, Cryogenics, Mirrors, Space telescopes, Mars, Stars

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Proceedings Article | 22 July 2014 Paper

Paper

Antarctic observations at long wavelengths with the IRAIT-ITM Telescope at Dome C

Gilles Durand, Pascal Tremblin, Vincent Minier, Yann Reinert, Christophe Leroy dos Santos, Louis Rodriguez, Xavier Joffrin, Maurizio Busso, Gino Tosti, Giuliano Nucciarelli, Mauro Dolci, Oscar Straniero, Angelo Valentini, Carlos Abia, Jean Marc Christille, Eric Doumayrou, Michel Lortholary, Patrice Charron, Paul Lotrus, Christian Walter, Samuel Ronayette, Zalpha Challita, Laurent Fromont, Mathieu Condamin, Min Kyong Kwon, Daniele Tavagnacco

Proceedings Volume 9145, 91450D (2014) https://doi.org/10.1117/12.2056562

KEYWORDS: Telescopes, Cameras, Bolometers, Sun, Astronomy, Mirrors, Astronomical telescopes, Stars, Sensors, Optical filters

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Proceedings Article | 15 July 2010 Paper

Paper

BASIC: a high-sensitivity all silicon bolometer focal plane for the SAFARI instrument aboard the SPICA Observatory

L. Rodriguez, V. Revéret, C. Cloué, C. Cara, J. Martignac, J. LePennec, F. Visticot, B. Horeau, E. Doumayrou, F. Pinsard, I. LeMer, O. Boulade, J. Sauvageot, P. Mulet, P. Agnèse, J. C. Cigna, S. Malhouitre

Proceedings Volume 7741, 77410G (2010) https://doi.org/10.1117/12.857150

KEYWORDS: Sensors, Silicon, Bolometers, Picture Archiving and Communication System, Staring arrays, Resistance, Observatories, Particles, Absorption, Electronics

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Proceedings Article | 15 July 2010 Paper

Paper

Status of the ArTeMiS camera to be installed on APEX

M. Talvard, P. André, Y. Le-Pennec, E. Doumayrou, D. Dubreuil, M. Lortholary, J. Martignac, C. De Breuck, D. Rabanus, P. Agnèse, O. Boulade, E. Ercolani, P. Gallais, B. Horeau, P. O. Lagage, B. Leriche, J. Relland, V. Revéret, L. Rodriguez

Proceedings Volume 7741, 77410D (2010) https://doi.org/10.1117/12.856437

KEYWORDS: Cameras, Telescopes, Bolometers, Mirrors, Sensors, Control systems, Distortion, Aluminum, Cryogenics, Optical alignment

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Proceedings Article | 13 July 2010 Paper

Paper

CEA bolometer arrays: the first year in space

Nicolas Billot, M. Sauvage, L. Rodriguez, B. Horeau, C. Kiss, H. Aussel, K. Okumura, O. Boulade, B. Altieri, A. Poglitsch, P. Agnèse

Proceedings Volume 7741, 774102 (2010) https://doi.org/10.1117/12.856449

KEYWORDS: Bolometers, Picture Archiving and Communication System, Sensors, Photometry, Calibration, Interference (communication), Electronics, Signal detection, Particles, Astronomy

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Proceedings Article | 18 July 2008 Paper

Paper

Recent results obtained on the APEX 12 m antenna with the ArTeMiS prototype camera

M. Talvard, P. André, L. Rodriguez, Y. Le-Pennec, C. De Breuck, V. Revéret, P. Agnèse, O. Boulade, E. Doumayrou, D. Dubreuil, E. Ercolani, P. Gallais, B. Horeau, PO Lagage, B. Leriche, M. Lortholary, J. Martignac, V. Minier, E. Pantin, D. Rabanus, J. Relland, G. Willmann

Proceedings Volume 7020, 70200A (2008) https://doi.org/10.1117/12.788197

KEYWORDS: Cameras, Sensors, Telescopes, Electronics, Bolometers, Prototyping, Space telescopes, Cryogenics, Mirrors, Antennas

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Proceedings Article | 12 July 2008 Paper

Paper

The Photodetector Array Camera and Spectrometer (PACS) for the Herschel Space Observatory

Albrecht Poglitsch, Christoffel Waelkens, Otto Bauer, Jordi Cepa, Helmut Feuchtgruber, Thomas Henning, Chris van Hoof, Franz Kerschbaum, Oliver Krause, Etienne Renotte, Louis Rodriguez, Paolo Saraceno, Bart Vandenbussche

Proceedings Volume 7010, 701005 (2008) https://doi.org/10.1117/12.790016

KEYWORDS: Spectroscopy, Photometry, Sensors, Point spread functions, Picture Archiving and Communication System, Telescopes, Bolometers, Calibration, Imaging spectroscopy, Optical filters

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Proceedings Article | 12 July 2008 Paper

Paper

The European contribution to the SPICA mission

Bruce Swinyard, Takao Nakagawa, Hideo Matsuhara, Doug Griffin, Marc Ferlet, Paul Eccleston, Anna di Giorgio, Jochem Baselmans, Javier Goicoechea, Kate Isaak, Phillip Mauskopf, Louis Rodriguez, Frederic Pinsard, Walfried Raab, Lionel Duband, Nicholas Luchier, Nicola Rando, Ana Heras, Thomas Jagemann, Norbert Geis, Sebastien Vives

Proceedings Volume 7010, 70100I (2008) https://doi.org/10.1117/12.789195

KEYWORDS: Space telescopes, Telescopes, Mirrors, Sensors, Optical benches, Space operations, Optical instrument design, Diffraction, Satellites, Far infrared

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Proceedings Article | 6 July 2006 Paper

Paper

ArTeMiS: filled bolometer arrays for next-generation sub-mm telescopes

M. Talvard, P. André, L. Rodriguez, V. Minier, A. Benoit, B. Leriche, F. Pajot, L. Vigroux, P. Agnèse, O. Boulade, E. Doumayrou, D. Dubreuil, G. Durand, P. Gallais, B. Horeau, P. Lagage, J. Le-Pennec, M. Lortholary, J. Martignac, V. Revéret, N. Schneider, J. Stutzki, C. Veyssière, C. Walter

Proceedings Volume 6275, 627503 (2006) https://doi.org/10.1117/12.671133

KEYWORDS: Bolometers, Telescopes, Space telescopes, Cameras, Control systems, Stars, Galactic astronomy, Cryogenics, Detector arrays, Spatial resolution

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Proceedings Article | 6 July 2006 Paper

Paper

A study on the use of the PACS bolometer arrays for submillimeter ground-based telescopes

Vincent Reveret, Louis Rodriguez, Philippe André, Benoit Horeau, Jean Le Pennec, Patrick Agnèse

Proceedings Volume 6275, 627502 (2006) https://doi.org/10.1117/12.670941

KEYWORDS: Bolometers, Absorption, Silicon, Picture Archiving and Communication System, Telescopes, Resistors, Dielectrics, Atmospheric optics, Indium, Sensors

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Proceedings Article | 10 June 2006 Paper

Paper

The photodetector array camera and spectrometer (PACS) for the Herschel Space Observatory

Albrecht Poglitsch, Christoffel Waelkens, Otto Bauer, Jordi Cepa, Helmut Feuchtgruber, Thomas Henning, Chris van Hoof, Franz Kerschbaum, Dietrich Lemke, Etienne Renotte, Louis Rodriguez, Paolo Saraceno, Bart Vandenbussche

Proceedings Volume 6265, 62650B (2006) https://doi.org/10.1117/12.670654

KEYWORDS: Photometry, Spectroscopy, Picture Archiving and Communication System, Sensors, Telescopes, Bolometers, Imaging spectroscopy, Calibration, Fermium, Frequency modulation

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Proceedings Article | 12 October 2004 Paper

Paper

The photodetector array camera and spectrometer (PACS) for the Herschel Space Observatory

Albrecht Poglitsch, Christoffel Waelkens, Otto Bauer, Jordi Cepa, Thomas Henning, Chris van Hoof, Reinhard Katterloher, Franz Kerschbaum, Dietrich Lemke, Etienne Renotte, Louis Rodriguez, Pierre Royer, Paolo Saraceno

Proceedings Volume 5487, (2004) https://doi.org/10.1117/12.550045

KEYWORDS: Spectroscopy, Photometry, Sensors, Picture Archiving and Communication System, Bolometers, Telescopes, Imaging spectroscopy, Spectroscopes, Calibration, Photoresistors

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Proceedings Article | 8 October 2004 Paper

Paper

Submillimeter bolometers arrays for the PACS/Herschel spectro-photometer

Francois Simoens, Patrick Agnese, Alain Beguin, Jacques Carcey, Jean-Charles Cigna, Jean-Louis Pornin, Patrice Rey, Aurelie Vandeneynde, Louis Rodriguez, Olivier Boulade, Jean Lepennec, Jerome Martignac, Eric Doumayrou, Vincent Reveret, Laurent Vigroux

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.551299

KEYWORDS: Sensors, Electronics, Bolometers, Picture Archiving and Communication System, Silicon, Resistors, Manufacturing, Absorption, Electro optical modeling, Staring arrays

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Proceedings Article | 17 February 2003 Paper

Paper

Filled bolometer arrays for Herschel/PACS

Patrick Agnese, C. Cigna, Jean-Louis Pornin, R. Accomo, Claude Bonnin, N. Colombel, M. Delcourt, Eric Doumayrou, Jean Lepennec, Jerome Martignac, Vincent Reveret, Louis Rodriguez, Laurent Vigroux

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459191

KEYWORDS: Silicon, Picture Archiving and Communication System, Bolometers, Sensors, Electronics, Multiplexers, Manufacturing, Indium, Far infrared, Cryocoolers

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Proceedings Article | 28 July 2000 Paper

Paper

FIRST-SPIRE spectrometer: a novel imaging FTS for the submillimeter

Bruce Swinyard, Peter Ade, Matthew Griffin, Kjetil Dohlen, Jean-Paul Baluteau, Dominque Pouliquen, Diddier Ferand, Pascal Dargent, Guy Michel, Jerome Martignac, Louis Rodriguez, Donald Jennings, Martin Caldwell, Anthony Richards, Peter Hamilton, David Naylor

Proceedings Volume 4013, (2000) https://doi.org/10.1117/12.393967

KEYWORDS: Mirrors, Fourier transforms, Sensors, Spectroscopy, Beam splitters, Spectral resolution, Telescopes, Signal to noise ratio, Device simulation, Optical design

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Proceedings Article | 26 July 1999 Paper

Paper

New technological development for far-infrared bolometer arrays

Patrick Agnese, Christophe Buzzi, Patrice Rey, Louis Rodriguez, Jean-Luc Tissot

Proceedings Volume 3698, (1999) https://doi.org/10.1117/12.354530

KEYWORDS: Silicon, Bolometers, Multiplexers, Thermography, Absorption, Far infrared, Sensors, Space telescopes, Staring arrays, Doping

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Proceedings Article | 7 October 1996 Paper

Paper

Cassini infrared Fourier spectroscopic investigation

Virgil Kunde, Peter Ade, Richard Barney, D. Bergman, Jean-Francois Bonnal, R. Borelli, David Boyd, John Brasunas, Gregory Brown, Simon Calcutt, F. Carroll, R. Courtin, Jacky Cretolle, Julie Crooke, Martin Davis, S. Edberg, Rainer Fettig, M. Flasar, David Glenar, S. Graham, John Hagopian, Claef Hakun, Patricia Hayes, L. Herath, Linda Spilker, Donald Jennings, Gabriel Karpati, C. Kellebenz, Brook Lakew, J. Lindsay, J. Lohr, James Lyons, Robert Martineau, Anthony Martino, Mack Matsumura, J. McCloskey, T. Melak, Guy Michel, Armando Morrell, C. Mosier, LaTunia Pack, M. Plants, D. Robinson, Louis Rodriguez, Paul Romani, Bill Schaefer, Stephen Schmidt, Carlos Trujillo, Tim Vellacott, K. Wagner, D. Yun

Proceedings Volume 2803, (1996) https://doi.org/10.1117/12.253416

KEYWORDS: Interferometers, Sensors, Mirrors, Telescopes, Infrared spectroscopy, Infrared radiation, Mid-IR, Beam splitters, Mercury cadmium telluride, Space telescopes

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Proceedings Article | 14 September 1994 Paper

Paper

Photovoltaic HgCdTe linear arrays for the Composite IR Spectrometer of the CASSINI mission

Louis Rodriguez, J. Le Pennec, Philippe Bouchut, Stephane Guillot, Jean-Louis Pornin, Isabelle Bischoff, J. Belle

Proceedings Volume 2268, (1994) https://doi.org/10.1117/12.185845

KEYWORDS: Diodes, Infrared spectroscopy, Spectroscopy, Sensors, Photovoltaics, Manufacturing, Mercury cadmium telluride, Infrared radiation, Detector arrays, Composites

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Proceedings Article | 15 July 1994 Paper

Paper

HgCdTe photovoltaic linear array for the Cassini infrared spectrometer

Philippe Bouchut, Stephane Guillot, Jean-Louis Pornin, Philippe Rambaud, Dominique Giotta, Louis Rodriguez, J. Le Pennec

Proceedings Volume 2225, (1994) https://doi.org/10.1117/12.179712

KEYWORDS: Infrared spectroscopy, Mercury cadmium telluride, Spectroscopy, Photovoltaics, Infrared radiation, Diodes, Composites, Staring arrays, Detector arrays, Ions

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Showing 5 of 38 publications

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