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Proceedings Paper

Utilizing active single-mode fiber injection for speckle nulling in exoplanet characterization
Author(s): 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
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Paper 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.

Paper Details

Date Published: 1 September 2017
PDF: 7 pages
Proc. SPIE 10400, Techniques and Instrumentation for Detection of Exoplanets VIII, 104000Y (1 September 2017); doi: 10.1117/12.2275173
Show Author Affiliations
N. Klimovich, California Institute of Technology (United States)
Y. Xin, California Institute of Technology (United States)
D. Mawet, California Institute of Technology (United States)
G. Ruane, California Institute of Technology (United States)
J.-R. Delorme, California Institute of Technology (United States)
W. Xuan, California Institute of Technology (United States)
D. Echeverri, California Institute of Technology (United States)
M. Randolph, California Institute of Technology (United States)
J. Fucik, California Institute of Technology (United States)
J. K. Wallace, Jet Propulsion Lab. (United States)
J. Wang, California Institute of Technology (United States)
G. Vasisht, Jet Propulsion Lab. (United States)
R. Dekany, California Institute of Technology (United States)
B. Mennesson, Jet Propulsion Lab. (United States)
E. Choquet, Jet Propulsion Lab. (United States)
E. Serabyn, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 10400:
Techniques and Instrumentation for Detection of Exoplanets VIII
Stuart Shaklan, Editor(s)

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