The GLINT nulling interferometer: improving nulls for high-contrast imaging
Eckhart Spalding, Elizabeth Arcadi, Glen Douglass, Simon Gross,, Olivier Guyon, Marc-Antoine Martinod, Barnaby Norris, Stephanie, Rossini-Bryson, Adam Taras, Peter Tuthill, Kyohoon Ahn, Vincent Deo, Mona El, Morsy, Julien Lozi, Sebastien Vievard, and Michael Withford
TL;DR
GLINT is a nulling interferometer at Subaru Telescope designed to enhance high-contrast imaging of circumstellar environments, with recent upgrades to improve null stability and phase measurement capabilities.
Contribution
The paper introduces a new photonic chip for GLINT that achieves more achromatic nulls and phase information for fringe tracking, advancing high-contrast imaging technology.
Findings
Design of a new photonic chip for GLINT
Successful installation and testing at Subaru Telescope
Enhanced null stability and phase measurement capabilities
Abstract
GLINT is a nulling interferometer downstream of the SCExAO extreme-adaptive-optics system at the Subaru Telescope (Hawaii, USA), and is a pathfinder instrument for high-contrast imaging of circumstellar environments with photonic technologies. GLINT is effectively a testbed for more stable, compact, and modular instruments for the era of 30m-class telescopes. GLINT is now undergoing an upgrade with a new photonic chip for more achromatic nulls, and for phase information to enable fringe tracking. Here we provide an overview of the motivations for the GLINT project and report on the design of the new chip, the on-site installation, and current status.
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Taxonomy
TopicsAdaptive optics and wavefront sensing · Optical Systems and Laser Technology · Calibration and Measurement Techniques