Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization

N. Klimovich, Y. Xin, D. Mawet, G. Ruane, J. R. Delorme, W. Xuan, D. Echeverri, M. Randolph, J. Fucik, J. K. Wallace, J. Wang, G. Vasisht, R. Dekany, B. Mennesson, E. Choquet, E. Serabyn

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

Abstract

Despite recent advances in high-contrast imaging techniques, high resolution spectroscopy for characterization of exoplanet atmospheres is still limited by our ability to suppress residual starlight speckles at the planet's location. We have demonstrated a new concept for speckle nulling by injecting directly imaged planet light into a single-mode fiber, linking a high-contrast adaptively-corrected coronagraph to a high-resolution spectrograph (diffraction-limited or not). The restrictions on the incident electric field that will couple into the single-mode fiber give the adaptive optics system additional degrees of freedom to suppress the speckle noise on top of destructive interference. We are able to achieve a starlight suppression gains that are an order of magnitude better than conventional techniques in broadband light with minimal planet throughput losses.

Original languageEnglish (US)
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets VIII
EditorsStuart Shaklan
PublisherSPIE
ISBN (Electronic)9781510612570
DOIs
StatePublished - 2017
EventTechniques and Instrumentation for Detection of Exoplanets VIII 2017 - San Diego, United States
Duration: Aug 8 2017Aug 10 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10400
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceTechniques and Instrumentation for Detection of Exoplanets VIII 2017
Country/TerritoryUnited States
CitySan Diego
Period8/8/178/10/17

Funding

The authors would like to acknowledge the financial support of the Heising-Simons foundation.

Keywords

  • broadband
  • exoplanet char-acterization
  • fiber injection unit
  • instrumentation
  • speckle nulling
  • spectrograph
  • vortex coronagraph

ASJC Scopus subject areas

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

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