GLINT, a pathfinder instrument for exoplanets characterization through nulling interferometry

Tiphaine Lagadec, Peter Tuthill, Barnaby Norris, Simon Gross, Alex Arriola, Thomas Gretzinger, Nick Cvetojevic, Jon Lawrence, Michael Withford, Marc-Antoince Martinod

Research output: Chapter in Book/Report/Conference proceedingConference abstractpeer-review


High angular resolution (of order milliarcseconds) at high contrast (fractional flux of order 10-6 or fainter) is required to directly detect exoplanets light, revealing their intrinsic atmosphere and surface properties. Here we present the GLINT (Guided Light Interferometric Nulling Technologies) instrument, a pathfinder developed at the University of Sydney in Australia to tackle this task. It employs nulling interferometry to actively reject the light of a host star through destructive interference. Such advanced control and processing of starlight is accomplished by way of photonic technologies fabricated into integrated optical chips. This platform immediately offers versatile and complex optical layouts all miniaturized onto highly stable and low-loss components. The first GLINT prototype was demonstrated on sky at the 4m Anglo Australian Telescope. Our current testbed on the 8m Subaru telescope boasts significantly expanded capabilities including multiple input array elements feeding a spectrally-dispersed interferometer delivering multi-channel nulling and complex visibility data.
Original languageEnglish
Title of host publicationAbstracts of Extreme Solar Systems IV (Reykjavik, Iceland)
Place of PublicationReykjavik, Iceland
PublisherAmerican Astronomical Society
Number of pages1
Publication statusPublished - Aug 2019
EventExtreme Solar Systems IV - Reykjavik, Iceland
Duration: 19 Aug 201923 Aug 2019

Publication series

NameBulletin of the American Astronomical Society
PublisherAmerican Astronomical Society
ISSN (Print)0002-7537
ISSN (Electronic)2330-9458


ConferenceExtreme Solar Systems IV


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