A metrological characterization of the SPEED test-bed PIAACMC components

K. Barjot; P. Martinez; M. Beaulieu; C. Gouvret; A. Marcotto; O. Guyon; M. Belhadi; A. Caillat; T. Behaghel; J. M. Le Duigou; K. Dohlen; A. Vigan

doi:10.1117/12.2557112

A metrological characterization of the SPEED test-bed PIAACMC components

K. Barjot, P. Martinez, M. Beaulieu, C. Gouvret, A. Marcotto, O. Guyon, M. Belhadi, A. Caillat, T. Behaghel, J. M. Le Duigou, K. Dohlen, A. Vigan

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

The segmented pupil experiment for exoplanet detection (SPEED) facility aims to improve knowledge and insight into various areas required for gearing up high-contrast imaging instruments adapted to the unprecedented high angular resolution and complexity of the forthcoming extremely large telescopes (ELTs). SPEED combines an ELT simulator, cophasing optics, wavefront control and shaping with a multi-deformable mirror (DM) system, and optimized small inner-working angle (IWA) coronagraphy. The fundamental objective of the SPEED setup is to demonstrate deep contrast into a dark hole optimized for small field of view and very small IWA, adapted to the hunt of exoplanets in the habitable zone around late-Type stars. SPEED is designed to implement an optimized small IWA coronagraph: The phase-induced amplitude apodization complex mask coronagraph (PIAACMC). The PIAACMC consists in a multi-zone phase-shifting focal plane mask (FPM) and two apodization mirrors (PIAA-M1 and PIAA-M2), with strong manufacturing specifications. Recently, a first-generation prototype of a PIAACMC optimized for the SPEED facility has been designed and manufactured. The manufacturing components exhibit high optical quality that meets specifications. In this paper, we present how these components have been characterized by a metrological instrument, an interferential microscope, and then we show what is yielded from this characterization for the FPM and the mirrors. Eventually, we discuss the results and the perspectives of the implementation of the PIAACMC components on the SPEED setup.

Original language	English (US)
Title of host publication	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV
Editors	Ramon Navarro, Roland Geyl
Publisher	SPIE
ISBN (Electronic)	9781510636897
DOIs	https://doi.org/10.1117/12.2557112
State	Published - 2020
Externally published	Yes
Event	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020 - Virtual, Online, United States Duration: Dec 14 2020 → Dec 22 2020

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	11451
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020
Country/Territory	United States
City	Virtual, Online
Period	12/14/20 → 12/22/20

Keywords

Exoplanets
apodization mirrors
complex focal plane mask
coronagraphy
interferential microscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.2557112

Cite this

Barjot, K., Martinez, P., Beaulieu, M., Gouvret, C., Marcotto, A., Guyon, O., Belhadi, M., Caillat, A., Behaghel, T., Le Duigou, J. M., Dohlen, K., & Vigan, A. (2020). A metrological characterization of the SPEED test-bed PIAACMC components. In R. Navarro, & R. Geyl (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV Article 114513B (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11451). SPIE. https://doi.org/10.1117/12.2557112

A metrological characterization of the SPEED test-bed PIAACMC components. / Barjot, K.; Martinez, P.; Beaulieu, M. et al.
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV. ed. / Ramon Navarro; Roland Geyl. SPIE, 2020. 114513B (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11451).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Barjot, K, Martinez, P, Beaulieu, M, Gouvret, C, Marcotto, A, Guyon, O, Belhadi, M, Caillat, A, Behaghel, T, Le Duigou, JM, Dohlen, K & Vigan, A 2020, A metrological characterization of the SPEED test-bed PIAACMC components. in R Navarro & R Geyl (eds), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV., 114513B, Proceedings of SPIE - The International Society for Optical Engineering, vol. 11451, SPIE, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020, Virtual, Online, United States, 12/14/20. https://doi.org/10.1117/12.2557112

Barjot K, Martinez P, Beaulieu M, Gouvret C, Marcotto A, Guyon O et al. A metrological characterization of the SPEED test-bed PIAACMC components. In Navarro R, Geyl R, editors, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV. SPIE. 2020. 114513B. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2557112

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title = "A metrological characterization of the SPEED test-bed PIAACMC components",

abstract = "The segmented pupil experiment for exoplanet detection (SPEED) facility aims to improve knowledge and insight into various areas required for gearing up high-contrast imaging instruments adapted to the unprecedented high angular resolution and complexity of the forthcoming extremely large telescopes (ELTs). SPEED combines an ELT simulator, cophasing optics, wavefront control and shaping with a multi-deformable mirror (DM) system, and optimized small inner-working angle (IWA) coronagraphy. The fundamental objective of the SPEED setup is to demonstrate deep contrast into a dark hole optimized for small field of view and very small IWA, adapted to the hunt of exoplanets in the habitable zone around late-Type stars. SPEED is designed to implement an optimized small IWA coronagraph: The phase-induced amplitude apodization complex mask coronagraph (PIAACMC). The PIAACMC consists in a multi-zone phase-shifting focal plane mask (FPM) and two apodization mirrors (PIAA-M1 and PIAA-M2), with strong manufacturing specifications. Recently, a first-generation prototype of a PIAACMC optimized for the SPEED facility has been designed and manufactured. The manufacturing components exhibit high optical quality that meets specifications. In this paper, we present how these components have been characterized by a metrological instrument, an interferential microscope, and then we show what is yielded from this characterization for the FPM and the mirrors. Eventually, we discuss the results and the perspectives of the implementation of the PIAACMC components on the SPEED setup.",

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AU - Gouvret, C.

AU - Marcotto, A.

AU - Guyon, O.

AU - Belhadi, M.

AU - Caillat, A.

AU - Behaghel, T.

AU - Le Duigou, J. M.

AU - Dohlen, K.

AU - Vigan, A.

PY - 2020

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AB - The segmented pupil experiment for exoplanet detection (SPEED) facility aims to improve knowledge and insight into various areas required for gearing up high-contrast imaging instruments adapted to the unprecedented high angular resolution and complexity of the forthcoming extremely large telescopes (ELTs). SPEED combines an ELT simulator, cophasing optics, wavefront control and shaping with a multi-deformable mirror (DM) system, and optimized small inner-working angle (IWA) coronagraphy. The fundamental objective of the SPEED setup is to demonstrate deep contrast into a dark hole optimized for small field of view and very small IWA, adapted to the hunt of exoplanets in the habitable zone around late-Type stars. SPEED is designed to implement an optimized small IWA coronagraph: The phase-induced amplitude apodization complex mask coronagraph (PIAACMC). The PIAACMC consists in a multi-zone phase-shifting focal plane mask (FPM) and two apodization mirrors (PIAA-M1 and PIAA-M2), with strong manufacturing specifications. Recently, a first-generation prototype of a PIAACMC optimized for the SPEED facility has been designed and manufactured. The manufacturing components exhibit high optical quality that meets specifications. In this paper, we present how these components have been characterized by a metrological instrument, an interferential microscope, and then we show what is yielded from this characterization for the FPM and the mirrors. Eventually, we discuss the results and the perspectives of the implementation of the PIAACMC components on the SPEED setup.

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ER -

A metrological characterization of the SPEED test-bed PIAACMC components

Abstract

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Keywords

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