Design of the VLTI/Hi-5 light injection system

G. Garreau; A. Bigioli; G. Raskin; J-P. Berger; C. Dandumont; H.-D. Kenchington Goldsmith; S. Gross; M. Ireland; L. Labadie; R. Laugier; J. Loicq; S. Madden; G. Martin; A. Mazzoli; J. Morren; H. Shao; K. Yan; D. Defrère

doi:10.1117/12.2629180

Design of the VLTI/Hi-5 light injection system

G. Garreau^*, A. Bigioli, G. Raskin, J-P. Berger, C. Dandumont, H.-D. Kenchington Goldsmith, S. Gross, M. Ireland, L. Labadie, R. Laugier, J. Loicq, S. Madden, G. Martin, A. Mazzoli, J. Morren, H. Shao, K. Yan, D. Defrère

^*Corresponding author for this work

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

46 Downloads (Pure)

Abstract

Hi-5 is an ERC-funded project hosted at KU Leuven and a proposed visitor instrument for the VLTI. Its primary goal is to image the snow line region around young planetary systems using nulling interferometry in the L' band, between 3.5 and 4.1 mu m, where the contrast between exoplanets and their host stars is very advantageous. The breakthrough is the use of a photonic chip based beam combiner, which only recently allowed the required theoretical raw contrast of 10(-3) in this spectral range. The VLTI long baseline interferometry enables to reach high angular resolution (4.2 mas at 3.8 mu m wavelength with the Auxiliary Telescopes (ATs)), while high contrast detection is achieved using nulling interferometry. This polarisation requires a high degree of optical symmetry between the four pupils of the VLTI, only possible with precise phase, dispersion and intensity control systems. The instrument is currently in its design phase. In this paper, the warm optics design and the injection system up to the photonic chip are presented. The different properties of the design are presented including the optics used, the characteristics of the four beams and the current drawbacks. Particular attention is devoted to the optical alignment and the tolerance analysis in order to estimate the precision required for the alignment procedure and therefore to choose adapted optical mountings.

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	Bellingham, Washington
Publisher	SPIE
Pages	1218320-1-1218320-16
Number of pages	16
ISBN (Electronic)	9781510653481
ISBN (Print)	9781510653474
DOIs	https://doi.org/10.1117/12.2629180
Publication status	Published - 26 Aug 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

Bibliographical note

Copyright 2022 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Instrumentation
nulling interferometry
VLTI
Hi-5

Access to Document

10.1117/12.2629180

Publisher version (open access)Final published version, 3.19 MBLicence: Other

Cite this

Garreau, G., Bigioli, A., Raskin, G., Berger, J.-P., Dandumont, C., Goldsmith, H.-D. K., Gross, S., Ireland, M., Labadie, L., Laugier, R., Loicq, J., Madden, S., Martin, G., Mazzoli, A., Morren, J., Shao, H., Yan, K., & Defrère, D. (2022). Design of the VLTI/Hi-5 light injection system. In A. Mérand, S. Sallum, & J. Sanchez-Bermudez (Eds.), Optical and Infrared Interferometry and Imaging VIII (pp. 1218320-1-1218320-16). Article 1218320 (Proceedings of SPIE; Vol. 12183). SPIE. https://doi.org/10.1117/12.2629180

@inproceedings{f53a1a9d2fe848fbb6a868479a0be09d,

title = "Design of the VLTI/Hi-5 light injection system",

abstract = "Hi-5 is an ERC-funded project hosted at KU Leuven and a proposed visitor instrument for the VLTI. Its primary goal is to image the snow line region around young planetary systems using nulling interferometry in the L' band, between 3.5 and 4.1 mu m, where the contrast between exoplanets and their host stars is very advantageous. The breakthrough is the use of a photonic chip based beam combiner, which only recently allowed the required theoretical raw contrast of 10(-3) in this spectral range. The VLTI long baseline interferometry enables to reach high angular resolution (4.2 mas at 3.8 mu m wavelength with the Auxiliary Telescopes (ATs)), while high contrast detection is achieved using nulling interferometry. This polarisation requires a high degree of optical symmetry between the four pupils of the VLTI, only possible with precise phase, dispersion and intensity control systems. The instrument is currently in its design phase. In this paper, the warm optics design and the injection system up to the photonic chip are presented. The different properties of the design are presented including the optics used, the characteristics of the four beams and the current drawbacks. Particular attention is devoted to the optical alignment and the tolerance analysis in order to estimate the precision required for the alignment procedure and therefore to choose adapted optical mountings.",

keywords = "Instrumentation, nulling interferometry, VLTI, Hi-5",

author = "G. Garreau and A. Bigioli and G. Raskin and J-P. Berger and C. Dandumont and Goldsmith, {H.-D. Kenchington} and S. Gross and M. Ireland and L. Labadie and R. Laugier and J. Loicq and S. Madden and G. Martin and A. Mazzoli and J. Morren and H. Shao and K. Yan and D. Defr{\`e}re",

note = "Copyright 2022 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.; 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",

year = "2022",

month = aug,

day = "26",

doi = "10.1117/12.2629180",

language = "English",

isbn = "9781510653474",

series = "Proceedings of SPIE",

publisher = "SPIE",

pages = "1218320--1--1218320--16",

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

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

address = "United States",

}

Garreau, G, Bigioli, A, Raskin, G, Berger, J-P, Dandumont, C, Goldsmith, H-DK, Gross, S, Ireland, M, Labadie, L, Laugier, R, Loicq, J, Madden, S, Martin, G, Mazzoli, A, Morren, J, Shao, H, Yan, K & Defrère, D 2022, Design of the VLTI/Hi-5 light injection system. in A Mérand, S Sallum & J Sanchez-Bermudez (eds), Optical and Infrared Interferometry and Imaging VIII., 1218320, Proceedings of SPIE, vol. 12183, SPIE, Bellingham, Washington, pp. 1218320-1-1218320-16, 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/10.1117/12.2629180

Design of the VLTI/Hi-5 light injection system. / Garreau, G.; Bigioli, A.; Raskin, G. et al.
Optical and Infrared Interferometry and Imaging VIII. ed. / Antoine Mérand; Stephanie Sallum; Joel Sanchez-Bermudez. Bellingham, Washington: SPIE, 2022. p. 1218320-1-1218320-16 1218320 (Proceedings of SPIE; Vol. 12183).

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

TY - GEN

T1 - Design of the VLTI/Hi-5 light injection system

AU - Garreau, G.

AU - Bigioli, A.

AU - Raskin, G.

AU - Berger, J-P.

AU - Dandumont, C.

AU - Goldsmith, H.-D. Kenchington

AU - Gross, S.

AU - Ireland, M.

AU - Labadie, L.

AU - Laugier, R.

AU - Loicq, J.

AU - Madden, S.

AU - Martin, G.

AU - Mazzoli, A.

AU - Morren, J.

AU - Shao, H.

AU - Yan, K.

AU - Defrère, D.

N1 - Copyright 2022 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

PY - 2022/8/26

Y1 - 2022/8/26

N2 - Hi-5 is an ERC-funded project hosted at KU Leuven and a proposed visitor instrument for the VLTI. Its primary goal is to image the snow line region around young planetary systems using nulling interferometry in the L' band, between 3.5 and 4.1 mu m, where the contrast between exoplanets and their host stars is very advantageous. The breakthrough is the use of a photonic chip based beam combiner, which only recently allowed the required theoretical raw contrast of 10(-3) in this spectral range. The VLTI long baseline interferometry enables to reach high angular resolution (4.2 mas at 3.8 mu m wavelength with the Auxiliary Telescopes (ATs)), while high contrast detection is achieved using nulling interferometry. This polarisation requires a high degree of optical symmetry between the four pupils of the VLTI, only possible with precise phase, dispersion and intensity control systems. The instrument is currently in its design phase. In this paper, the warm optics design and the injection system up to the photonic chip are presented. The different properties of the design are presented including the optics used, the characteristics of the four beams and the current drawbacks. Particular attention is devoted to the optical alignment and the tolerance analysis in order to estimate the precision required for the alignment procedure and therefore to choose adapted optical mountings.

AB - Hi-5 is an ERC-funded project hosted at KU Leuven and a proposed visitor instrument for the VLTI. Its primary goal is to image the snow line region around young planetary systems using nulling interferometry in the L' band, between 3.5 and 4.1 mu m, where the contrast between exoplanets and their host stars is very advantageous. The breakthrough is the use of a photonic chip based beam combiner, which only recently allowed the required theoretical raw contrast of 10(-3) in this spectral range. The VLTI long baseline interferometry enables to reach high angular resolution (4.2 mas at 3.8 mu m wavelength with the Auxiliary Telescopes (ATs)), while high contrast detection is achieved using nulling interferometry. This polarisation requires a high degree of optical symmetry between the four pupils of the VLTI, only possible with precise phase, dispersion and intensity control systems. The instrument is currently in its design phase. In this paper, the warm optics design and the injection system up to the photonic chip are presented. The different properties of the design are presented including the optics used, the characteristics of the four beams and the current drawbacks. Particular attention is devoted to the optical alignment and the tolerance analysis in order to estimate the precision required for the alignment procedure and therefore to choose adapted optical mountings.

KW - Instrumentation

KW - nulling interferometry

KW - VLTI

KW - Hi-5

U2 - 10.1117/12.2629180

DO - 10.1117/12.2629180

M3 - Conference proceeding contribution

SN - 9781510653474

T3 - Proceedings of SPIE

SP - 1218320-1-1218320-16

BT - Optical and Infrared Interferometry and Imaging VIII

A2 - Mérand, Antoine

A2 - Sallum, Stephanie

A2 - Sanchez-Bermudez, Joel

PB - SPIE

CY - Bellingham, Washington

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 -

Design of the VLTI/Hi-5 light injection system

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

Fingerprint

Cite this