CaltechAUTHORS
Published September 1, 2017 | Version Published
Book Section - Chapter Open

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

Creators

  • 1. ROR icon California Institute of Technology
  • 2. ROR icon Jet Propulsion Lab

Contributors

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.

Additional Information

© 2017 SPIE. The authors would like to acknowledge the financial support of the Heising-Simons foundation.

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Additional details

Identifiers

Eprint ID
84869
Resolver ID
CaltechAUTHORS:20180216-132039857

Funding

Heising-Simons Foundation

Dates

Created
2018-02-20
Created from EPrint's datestamp field
Updated
2021-11-15
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Astronomy Department , Physics Department
Series Name
Proceedings of SPIE
Series Volume or Issue Number
10400