First light of the High Contrast Integral Field Spectrograph (HCIFS)

Christian Delacroix, He Sun, Michael Galvin, Mary Anne Limbach, Tyler Groff, Maxime Rizzo, Matthew Grossman, Katherine Mumm, N. Jeremy Kasdin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Future space-based observatories such as WFIRST will be equipped with high contrast imaging instruments designed to study extrasolar planets and disks in the absence of atmospheric perturbations. One of the most efficient techniques to achieve this goal is the combination of wavefront control and broadband coronagraphy. Being able to achieve a high contrast over a wide spectral bandwidth allows us to characterize the chemical composition of exoplanet atmospheres using an integral field spectrograph (IFS). In this paper, we report on the development of such an IFS for the High Contrast Imaging Lab (HCIL) at Princeton University, downstream of a Shaped Pupil coronagraph. Our final lensletbased design calls for the light in an 18% band around 660 nm to be dispersed with a spectral resolution of 50. We also present our new laboratory control software written in Python, allowing the import of open-source packages such as CRISPY to ultimately reconstruct 3D datacubes from IFS spatio-spectral science images. Finally, we show and discuss our preliminary first light results, reaching a contrast of ~10-5 using in-house focal-plane wavefront control and estimation algorithms with two deformable mirrors.

Original languageEnglish (US)
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
EditorsRoland Geyl, Ramon Navarro
PublisherSPIE
ISBN (Print)9781510619654
DOIs
StatePublished - Jan 1 2018
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018 - Austin, United States
Duration: Jun 10 2018Jun 15 2018

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10706
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation III 2018
CountryUnited States
CityAustin
Period6/10/186/15/18

All Science Journal Classification (ASJC) codes

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

Keywords

  • Coronagraph
  • Direct imaging
  • Exoplanet
  • Integral field spectrograph
  • Wavefront estimation

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  • Cite this

    Delacroix, C., Sun, H., Galvin, M., Limbach, M. A., Groff, T., Rizzo, M., Grossman, M., Mumm, K., & Kasdin, N. J. (2018). First light of the High Contrast Integral Field Spectrograph (HCIFS). In R. Geyl, & R. Navarro (Eds.), Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III [107065L] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10706). SPIE. https://doi.org/10.1117/12.2312773