EPFL
 Biomedical Imaging GroupSTI
EPFL
  Publications
English only   BIG > Publications > Interferometric Fringes


 CONTENTS
 Home Page
 News & Events
 People
 Publications
 Tutorials and Reviews
 Research
 Demos
 Download Algorithms

 DOWNLOAD
 PDF
 Postscript
 All BibTeX References

Effective a posteriori Co-Phasing of Interferometric Fringe Data

A. Schutz, É. Thiébaut, F. Soulez, M. Tallon, G. Duvert, I. Tallon-Bosc

Proceedings of the SPIE Astronomical Telescopes + Instrumentation Conference on Optical and Infrared Interferometry and Imaging V (ATI'16), Edinburgh, United Kingdom, June 27-July 1, 2016, vol. 9907, pp. 99073D-1/99073D-9.



We have recently shown that a posteriori co-phasing of multi-spectral interferograms was possible [1]. In this contribution, we extend our approach so that it can be applied to actual data as provided by Amber [2] or Matisse instruments. The main advantage of the proposed post-processing technique is that it requires no modifications of the instruments and yields interferometric observables with higher SNR and much fewer unknowns (in particular for the Fourier phase) than conventional measurements. In order to perform the co-phasing of a complete sequence of interferograms, we jointly estimate a global phase template and the frame dependent optical path errors due to the turbulence. We show that this strategy is effective for very low SNR data. We assess the effectiveness of our method on simulated and actual AMBER data. We also compare the lowest SNR that can be achieved to the theoretical bounds and estimate the gain in sensitivity compared to usual interferometric data.

References

  1. F. Soulez, É. Thiébaut, M. Tallon, I. Tallon-Bosc, P. Garcia, "Optimal a posteriori Fringe Tracking in Optical Interferometry," Proceedings of the SPIE Astronomical Telescopes + Instrumentation Conference on Optical and Infrared Interferometry IV, Montréal QC, Canada, June 23-27, 2016, vol. 9146, pp. 91462Y-1/91462Y-14.

  2. R.G. Petrov, F. Malbet, G. Weigelt, P. Antonelli, U. Beckmann, Y. Bresson, A. Chelli, M. Dugué, G. Duvert, S. Gennari, L. Glück, P. Kern, S. Lagarde, E. Le Coarer, F. Lisi, F. Millour, K. Perraut, P. Puget, F. Rantakyrö, S. Robbe-Dubois, A. Roussel, P. Salinari, E. Tatulli, G. Zins, M. Accardo, B. Acke, K. Agabi, E. Altariba, B. Arezki, E. Aristidi, C. Baffa, J. Behrend, T. Blöcker, S. Bonhomme, S. Busoni, F. Cassaing, J.-M. Clausse, J. Colin, C. Connot, A. Delboulbé, A. Domiciano de Souza, T. Driebe, P. Feautrier, D. Ferruzzi, T. Forveille, E. Fossat, R. Foy, D. Fraix-Burnet, A. Gallardo, E. Giani, C. Gil, A. Glentzlin, M. Heiden, M. Heininger, O. Hernandez Utrera, K.-H. Hofmann, D. Kamm, M. Kiekebusch, S. Kraus, D. Le Contel, J.-M. Le Contel, T. Lesourd, B. Lopez, M. Lopez, Y. Magnard, A. Marconi, G. Mars, G. Martinot-Lagarde, P. Mathias, P. Mège, J.-L. Monin, D. Mouillet, D. Mourard, E. Nussbaum, K. Ohnaka, J. Pacheco, C. Perrier, Y. Rabbia, S. Rebattu, F. Reynaud, A. Richichi, A. Robini, M. Sacchettini, D. Schertl, M. Schöller, W. Solscheid, A. Spang, P. Stee, P. Stefanini, M. Tallon, I. Tallon-Bosc, D. Tasso, L. Testi, F. Vakili, O. von der Lühe, J.-C. Valtier, M. Vannier, N. Ventura, "AMBER, the Near-Infrared Spectro-Interferometric Three-Telescope VLTI Instrument," Astronomy & Astrophysics, vol. 464, no. 1, pp. 1-12, March II 2007.


@INPROCEEDINGS(http://bigwww.epfl.ch/publications/schutz1602.html,
AUTHOR="Schutz, A. and Thi{\'{e}}baut, {\'{E}}. and Soulez, F. and
        Tallon, M. and Duvert, G. and Tallon-Bosc, I.",
TITLE="Effective {\textit{a posteriori}} Co-Phasing of Interferometric
        Fringe Data",
BOOKTITLE="Proceedings of the {SPIE} Astronomical Telescopes +
        Instrumentation Conference on Optical and Infrared Interferometry
        and Imaging {V} ({ATI'16})",
YEAR="2016",
editor="",
volume="9907",
series="",
pages="99073D-1--99073D-9",
address="Edinburgh, United Kingdom",
month="June 27-July 1,",
organization="",
publisher="",
note="")

© 2016 SPIE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from SPIE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.