Development of a subwavelength grating vortex coronagraph of topological charge 4 (SGVC4)

@inproceedings{Delacroix2014DevelopmentOA,
  title={Development of a subwavelength grating vortex coronagraph of topological charge 4 (SGVC4)},
  author={C. Delacroix and O. Absil and B. Carlomagno and P. Piron and P. Forsberg and M. Karlsson and D. Mawet and S. Habraken and J. Surdej},
  booktitle={Astronomical Telescopes and Instrumentation},
  year={2014}
}
  • C. Delacroix, O. Absil, +6 authors J. Surdej
  • Published in
    Astronomical Telescopes and…
    2014
  • Physics, Engineering
  • One possible solution to achieve high contrast direct imaging at a small inner working angle (IWA) is to use a vector vortex coronagraph (VVC), which provides a continuous helical phase ramp in the focal plane of the telescope with a phase singularity in its center. Such an optical vortex is characterized by its topological charge, i.e., the number of times the phase accumulates 2π radians along a closed path surrounding the singularity. Over the past few years, we have been developing a charge… CONTINUE READING
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    References

    SHOWING 1-10 OF 30 REFERENCES
    Annular groove phase mask coronagraph in diamond for mid-IR wavelengths: manufacturing assessment and performance analysis
    • 6
    • PDF
    L'-band AGPM vector vortex coronagraph's first light on VLT/NACO. Discovery of a late-type companion
    • 56
    • PDF
    A diamond AGPM coronagraph for VISIR
    • 11
    • PDF
    Laboratory demonstration of a mid-infrared AGPM vector vortex coronagraph
    • 49
    • PDF
    Annular Groove Phase Mask Coronagraph
    • 301
    • PDF
    L'-band AGPM vector vortex coronagraph's first light on LBTI/LMIRCam
    • 26
    • PDF