Technical requirements and optical design of the Hi-5 spectrometer

C. Dandumont; A. Mazzoli; V. Laborde; R. Laugier; A. Bigioli; G. Garreau; S. Gross; M. Ireland; H.-D. Kenchington Goldsmith; L. Labadie; M.-A. Martinod; G. Raskin; A. Sanny; J. Loicq; D. Defrère

doi:10.1117/12.2627939

Technical requirements and optical design of the Hi-5 spectrometer

C. Dandumont^*, A. Mazzoli, V. Laborde, R. Laugier, A. Bigioli, G. Garreau, S. Gross, M. Ireland, H.-D. Kenchington Goldsmith, L. Labadie, M.-A. Martinod, G. Raskin, A. Sanny, J. Loicq, D. Defrère

^*Corresponding author for this work

School of Engineering

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

Abstract

Hi-5 is a proposed L' band high-contrast nulling interferometric instrument for the visitor focus of the Very Large Telescope Interferometer (VLTI). As a part of the ERC consolidator project called SCIFY (Self-Calibrated Interferometry For exoplanet spectroscopY), the instrument aims to achieve sufficient dynamic range and angular resolution to directly image and characterize the snow line of young extra-solar planetary systems.

The spectrometer is based on a dispersive grism and is located downstream of an integrated optics beam-combiner. To reach the contrast and sensitivity specifications, the outputs of the I/O chip must be sufficiently separated and properly sampled on the Hawaii-2RG detector. This has many implications for the photonic chip and spectrometer design. We present these technical requirements, trade-off studies, and phase-A of the optical design of the Hi-5 spectrometer in this paper. For both science and contract-driven reasons, the instrument design currently features three different spectroscopic modes (R=20, 400, and 2000).

Designs and efficiency estimates for the grisms are also presented as well as the strategy to separate the two polarization states.

Original language	English
Title of host publication	Optical and Infrared Interferometry and Imaging VIII
Editors	Antoine Mérand, Stephanie Sallum, Joel Sanchez-Bermudez
Place of Publication	Washington USA
Publisher	SPIE
Pages	1-10
Number of pages	10
ISBN (Electronic)	9781510653481
ISBN (Print)	9781510653474
DOIs	https://doi.org/10.1117/12.2627939
Publication status	Published - 2022
Event	Conference on Optical and Infrared Interferometry and Imaging VIII Part of SPIE Astronomical Telescopes and Instrumentation Conference - Montreal, Canada Duration: 17 Jul 2022 → 22 Jul 2022

Publication series

Name	Proceedings of SPIE
Publisher	SPIE
Volume	12183
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Conference on Optical and Infrared Interferometry and Imaging VIII Part of SPIE Astronomical Telescopes and Instrumentation Conference
Country/Territory	Canada
City	Montreal
Period	17/07/22 → 22/07/22

Keywords

interferometry
nulling
exoplanets
astronomy
spectrometer
optical design

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10.1117/12.2627939

Cite this

Dandumont, C., Mazzoli, A., Laborde, V., Laugier, R., Bigioli, A., Garreau, G., Gross, S., Ireland, M., Goldsmith, H.-D. K., Labadie, L., Martinod, M.-A., Raskin, G., Sanny, A., Loicq, J., & Defrère, D. (2022). Technical requirements and optical design of the Hi-5 spectrometer. In A. Mérand, S. Sallum, & J. Sanchez-Bermudez (Eds.), Optical and Infrared Interferometry and Imaging VIII (pp. 1-10). Article 121831Y (Proceedings of SPIE; Vol. 12183). SPIE. https://doi.org/10.1117/12.2627939

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title = "Technical requirements and optical design of the Hi-5 spectrometer",

abstract = "Hi-5 is a proposed L' band high-contrast nulling interferometric instrument for the visitor focus of the Very Large Telescope Interferometer (VLTI). As a part of the ERC consolidator project called SCIFY (Self-Calibrated Interferometry For exoplanet spectroscopY), the instrument aims to achieve sufficient dynamic range and angular resolution to directly image and characterize the snow line of young extra-solar planetary systems.The spectrometer is based on a dispersive grism and is located downstream of an integrated optics beam-combiner. To reach the contrast and sensitivity specifications, the outputs of the I/O chip must be sufficiently separated and properly sampled on the Hawaii-2RG detector. This has many implications for the photonic chip and spectrometer design. We present these technical requirements, trade-off studies, and phase-A of the optical design of the Hi-5 spectrometer in this paper. For both science and contract-driven reasons, the instrument design currently features three different spectroscopic modes (R=20, 400, and 2000).Designs and efficiency estimates for the grisms are also presented as well as the strategy to separate the two polarization states.",

keywords = "interferometry, nulling, exoplanets, astronomy, spectrometer, optical design",

author = "C. Dandumont and A. Mazzoli and V. Laborde and R. Laugier and A. Bigioli and G. Garreau and S. Gross and M. Ireland and Goldsmith, {H.-D. Kenchington} and L. Labadie and M.-A. Martinod and G. Raskin and A. Sanny and J. Loicq and D. Defr{\`e}re",

year = "2022",

doi = "10.1117/12.2627939",

language = "English",

isbn = "9781510653474",

series = "Proceedings of SPIE",

publisher = "SPIE",

pages = "1--10",

editor = "Antoine M{\'e}rand and Stephanie Sallum and Joel Sanchez-Bermudez",

booktitle = "Optical and Infrared Interferometry and Imaging VIII",

address = "United States",

note = "Conference on Optical and Infrared Interferometry and Imaging VIII Part of SPIE Astronomical Telescopes and Instrumentation Conference ; Conference date: 17-07-2022 Through 22-07-2022",

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Dandumont, C, Mazzoli, A, Laborde, V, Laugier, R, Bigioli, A, Garreau, G, Gross, S, Ireland, M, Goldsmith, H-DK, Labadie, L, Martinod, M-A, Raskin, G, Sanny, A, Loicq, J & Defrère, D 2022, Technical requirements and optical design of the Hi-5 spectrometer. in A Mérand, S Sallum & J Sanchez-Bermudez (eds), Optical and Infrared Interferometry and Imaging VIII., 121831Y, Proceedings of SPIE, vol. 12183, SPIE, Washington USA, pp. 1-10, Conference on Optical and Infrared Interferometry and Imaging VIII Part of SPIE Astronomical Telescopes and Instrumentation Conference, Montreal, Canada, 17/07/22. https://doi.org/10.1117/12.2627939

Technical requirements and optical design of the Hi-5 spectrometer. / Dandumont, C.; Mazzoli, A.; Laborde, V. et al.
Optical and Infrared Interferometry and Imaging VIII. ed. / Antoine Mérand; Stephanie Sallum; Joel Sanchez-Bermudez. Washington USA: SPIE, 2022. p. 1-10 121831Y (Proceedings of SPIE; Vol. 12183).

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

TY - GEN

T1 - Technical requirements and optical design of the Hi-5 spectrometer

AU - Dandumont, C.

AU - Mazzoli, A.

AU - Laborde, V.

AU - Laugier, R.

AU - Bigioli, A.

AU - Garreau, G.

AU - Gross, S.

AU - Ireland, M.

AU - Goldsmith, H.-D. Kenchington

AU - Labadie, L.

AU - Martinod, M.-A.

AU - Raskin, G.

AU - Sanny, A.

AU - Loicq, J.

AU - Defrère, D.

PY - 2022

Y1 - 2022

N2 - Hi-5 is a proposed L' band high-contrast nulling interferometric instrument for the visitor focus of the Very Large Telescope Interferometer (VLTI). As a part of the ERC consolidator project called SCIFY (Self-Calibrated Interferometry For exoplanet spectroscopY), the instrument aims to achieve sufficient dynamic range and angular resolution to directly image and characterize the snow line of young extra-solar planetary systems.The spectrometer is based on a dispersive grism and is located downstream of an integrated optics beam-combiner. To reach the contrast and sensitivity specifications, the outputs of the I/O chip must be sufficiently separated and properly sampled on the Hawaii-2RG detector. This has many implications for the photonic chip and spectrometer design. We present these technical requirements, trade-off studies, and phase-A of the optical design of the Hi-5 spectrometer in this paper. For both science and contract-driven reasons, the instrument design currently features three different spectroscopic modes (R=20, 400, and 2000).Designs and efficiency estimates for the grisms are also presented as well as the strategy to separate the two polarization states.

AB - Hi-5 is a proposed L' band high-contrast nulling interferometric instrument for the visitor focus of the Very Large Telescope Interferometer (VLTI). As a part of the ERC consolidator project called SCIFY (Self-Calibrated Interferometry For exoplanet spectroscopY), the instrument aims to achieve sufficient dynamic range and angular resolution to directly image and characterize the snow line of young extra-solar planetary systems.The spectrometer is based on a dispersive grism and is located downstream of an integrated optics beam-combiner. To reach the contrast and sensitivity specifications, the outputs of the I/O chip must be sufficiently separated and properly sampled on the Hawaii-2RG detector. This has many implications for the photonic chip and spectrometer design. We present these technical requirements, trade-off studies, and phase-A of the optical design of the Hi-5 spectrometer in this paper. For both science and contract-driven reasons, the instrument design currently features three different spectroscopic modes (R=20, 400, and 2000).Designs and efficiency estimates for the grisms are also presented as well as the strategy to separate the two polarization states.

KW - interferometry

KW - nulling

KW - exoplanets

KW - astronomy

KW - spectrometer

KW - optical design

U2 - 10.1117/12.2627939

DO - 10.1117/12.2627939

M3 - Conference proceeding contribution

SN - 9781510653474

T3 - Proceedings of SPIE

SP - 1

EP - 10

BT - Optical and Infrared Interferometry and Imaging VIII

A2 - Mérand, Antoine

A2 - Sallum, Stephanie

A2 - Sanchez-Bermudez, Joel

PB - SPIE

CY - Washington USA

T2 - Conference on Optical and Infrared Interferometry and Imaging VIII Part of SPIE Astronomical Telescopes and Instrumentation Conference

Y2 - 17 July 2022 through 22 July 2022

ER -

Technical requirements and optical design of the Hi-5 spectrometer

Abstract

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Keywords

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