Ms. Céline Pariès Profile

Céline Pariès

at Lab. d'Astrophysique de Marseille

SPIE Involvement:

Author

Publications (4)

Proceedings Article | 27 August 2022 Presentation + Paper

Super polished mirrors for the Roman Space Telescope CoronaGraphic Instrument: design, manufacturing, and optical performances

A. Caillat, M. Ferrari, M. Marcos, C. Pariès, A. Bonnefoi, V. Vitrac, M. Roulet, E. Hugot

Proceedings Volume 12180, 121801Y (2022) https://doi.org/10.1117/12.2627240

KEYWORDS: Mirrors, Polishing, Optics manufacturing, Manufacturing, Surface finishing, Coronagraphy, Space telescopes, Tolerancing, Optical instrument design, Off axis mirrors

Read Abstract +

Proceedings Article | 13 December 2020 Presentation + Paper

The Infra-Red Telescope (IRT) on board the THESEUS mission

Diego Götz, Stéphane Basa, Frédéric Pinsard, Laurent Martin, Axel Arhancet, Enrico Bozzo, Christophe Cara, Isabel Escudero Sanz, Pierre-Antoine Frugier, Johan Floriot, Ludovic Genolet, Paul Hedderman, Emeric Le Floc'h, Isabelle Le Mer, Stéphane Paltani, Tony Pamplona, Céline Paries, Thibaut Prod'homme, Benjamin Schneider, Chris Tenzer, Thierry Tourrette, Henri Triou

Proceedings Volume 11444, 114442M (2020) https://doi.org/10.1117/12.2561435

KEYWORDS: Telescopes, Spectroscopes, Observatories, Space operations, Gamma radiation, Eye, Near infrared

Read Abstract +

Proceedings Article | 12 July 2019 Open Access

Optical performance of NISP grisms flight models for EUCLID mission

Anne Costille, A. Caillat, C. Rossin, S. Pascal, P. Sanchez, B. Foulon, C. Pariès, S. Tisserand, Y. Salaun, T. Weber

Proceedings Volume 11180, 1118013 (2019) https://doi.org/10.1117/12.2535958

KEYWORDS: Manufacturing, Fermium, Frequency modulation, Optical filters, Optics manufacturing, Prisms, Wavefronts, Performance modeling, Sensors, Error analysis

Read Abstract +

The launch of ESA EUCLID mission is foreseen in 36020. The goal of the mission is to understand the nature of the dark energy and to map the geometry of the dark matter. The EUCLID telescope will be equipped with two instruments working in the visible range (VIS) and in the IR range (NISP) to investigate the distance-redshift relationship and the evolution of cosmic structures. The NISP (Near Infrared Spectro-Photometer) will operate in the near-IR spectral range (0.9-2μm) with two observing modes: the photometric mode for the acquisition of images with broadband filters, and the spectroscopic mode for the acquisition of slitless dispersed images on the detectors. NISP is then using four low resolution grisms to acquire spectroscopic image in different orientations to better distinguish the spectra observed and to cover two spectral ranges: 1250-1850nm range, and 920-1300nm range. Since 2010, Laboratoire d’Astrophysique de Marseille is working on the development and the test of the NISP grisms, that are complex optical components. The grism combines four main optical functions: a grism function done by the grating on the prism hypotenuse, a spectral filter done by a multilayer filter deposited on the first face of the prism, a focus function done by the curved filter face of the prism and a spectral wavefront correction done by the grating which grooves paths are nor parallel, neither straight. The NISP instrument is now entering in the integration phase of the proto flight model of the instrument. Therefore, the NISP grism flight models have been manufactured and delivered to the grism wheel assembly for integration by end of 2017. In this paper, we present the optical performance and characteristics of the four EUCLID NISP grisms flight models that have been developed and manufactured by four different industrial partners then integrated and tested by LAM. We focus on the performance obtained on the optical performance of the component; wavefront error of the components, the spectral transmission and groove profiles. The test results analysis show that the grisms flight models for NISP are well within specifications with an efficiency better than 70% on the spectral bandpass and a wavefront error on surfaces better than 30nm RMS. The results on the component show a good control of the manufacturing and integration process despite the difficulties at the beginning of the project to manufacture these components.

DOWNLOAD PAPER

Proceedings Article | 6 July 2018 Paper

The EUCLID NISP grisms flight models performance

Anne Costille, A. Caillat, C. Rossin, S. Pascal, P. Sanchez, R. Barette, P. Laurent, B. Foulon, C. Pariès

Proceedings Volume 10698, 106982B (2018) https://doi.org/10.1117/12.2309493

KEYWORDS: Manufacturing, Optical filters, Optics manufacturing, Prisms, Diffraction gratings, Vibrational characterization, Wavefront metrology

Read Abstract +

ESA EUCLID mission will be launched in 2020 to understand the nature of the dark energy responsible of the accelerated expansion of the Universe and to map the geometry of the dark matter. The map will investigate the distanceredshift relationship and the evolution of cosmic structures thanks to two instruments: the NISP and the VIS. The NISP (Near Infrared Spectro-Photometer) is operating in the near-IR spectral range (0.9-2μm) with two observing modes: the photometric mode for the acquisition of images with broad band filters, and the spectroscopic mode for the acquisition of slitless dispersed images on the detectors. The spectroscopic mode uses four low resolution grisms to cover two spectral ranges: three "red" grisms for 1250-1850nm range, with three different orientations, and one "blue" grism for 920- 1300nm range. The NISP grisms are complex optical components combining four main optical functions: a grism function (dispersion without beam deviation of the first diffracted order) done by the grating on the prism hypotenuse, a spectral filter done by a multilayer filter deposited on the first face of the prism to select the spectral bandpass, a focus function done by the curved filter face of the prism (curvature radius of 10m) and a spectral wavefront correction done by the grating which grooves paths are nor parallel, neither straight. The development of these components have been started since 10 years at the Laboratoire d’Astrophysique de Marseille (LAM) and was linked to the project phases: prototypes have been developed to demonstrate the feasibility, then engineering and qualification models to validate the optical and mechanical performance of the component, finally the flight models have been manufactured and tested and will be installed on NISP instrument. In this paper, we present the optical performance of the four EUCLID NISP grisms flight models characterized at LAM: wavefront error, spectral transmission and grating groove profiles. The test devices and the methods developed for the characterization of these specific optical components are described. The analysis of the test results have shown that the grisms flight models for NISP are within specifications with an efficiency better than 70% on the spectral bandpass and a wavefront error on surfaces better than 30nm RMS. The components have withstood vibration qualification level up to 11.6g RMS in random test and vacuum cryogenics test down to 130K with measurement of optical quality in transmission. The EUCLID grisms flight models have been delivered to NISP project in November 2017 after the test campaign done at LAM that has demonstrated the compliance to the specifications.

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