Self-calibrating photonic nulling systems for exoplanet imaging and spectroscopy

Olivier Guyon; Barnaby Norris; Peter Tuthill; Elizabeth Arcadi; Glen Douglas; Marc-Antoine Martinod; Simon Gross; Stephanie Rossini-Bryson; Eckhart Spalding

doi:10.1117/12.3020870

24 August 2024 Self-calibrating photonic nulling systems for exoplanet imaging and spectroscopy

Olivier Guyon, Barnaby Norris, Peter Tuthill, Elizabeth Arcadi, Glen Douglas, Marc-Antoine Martinod, Simon Gross, Stephanie Rossini-Bryson, Eckhart Spalding

Author Affiliations +

Proceedings Volume 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave; 130921V (2024) https://doi.org/10.1117/12.3020870
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

High Contrast Imaging systems (HCIs) must simultaneously optimize contrast, throughput, inner working angle, and angular resolution. HCIs must also be resilient to residual wavefront errors (WFEs), which is achieved by coronagraph design (low sensitivity to WFEs), active control (WFEs are suppressed) and self-calibration (the contribution of WFEs to residual starlight is accurately known and numerically removed). We establish a process for designing optimal HCIs considering resilience to WFEs, from which we derive fundamental performance limits in the presence of wavefront errors. We show that a discretized version of an optimal HCI system can be realized as a photonic nulling chip (PNC), an approach providing more design flexibility than is accessible with coronagraph masks. We demonstrate on-sky self-calibration capability with the PNC-based GLINT instrument at the Subaru Telescope, and discuss future developments for ground and space-based HCI.

Conference Presentation

Citation Download Citation

Olivier Guyon, Barnaby Norris, Peter Tuthill, Elizabeth Arcadi, Glen Douglas, Marc-Antoine Martinod, Simon Gross, Stephanie Rossini-Bryson, and Eckhart Spalding "Self-calibrating photonic nulling systems for exoplanet imaging and spectroscopy", Proc. SPIE 13092, Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave, 130921V (24 August 2024); https://doi.org/10.1117/12.3020870

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