TY - GEN
T1 - Real-time control for the GLINT nulling interferometer
AU - Rossini-Bryson, Stephanie
AU - Norris, Barnaby
AU - Lozi, Julien
AU - Deo, Vincent
AU - Martinod, Marc Antoine
AU - Spalding, Eckhart
AU - Arcadi, Elizabeth
AU - Douglass, Glen
AU - Vievard, Sebastien
AU - Ahn, Kyohoon
AU - Withford, Michael
AU - Morsy, Mona El
AU - Gross, Simon
AU - Guyon, Olivier
AU - Tuthill, Peter
N1 - Publisher Copyright:
© 2024 SPIE.
PY - 2024
Y1 - 2024
N2 - Directly imaging habitable-zone exoplanets and obtaining their spectra is a central goal in exoplanet science, but is extremely challenging due to the high contrasts and small angular separations which must be achieved. Nulling interferometry is a solution which suppresses on-axis starlight through destructive interference such that the star is 'nulled out'. The Guided Light Interferometric Nulling Technology Instrument (GLINT) at the 8.2-meter Subaru telescope performs nulling interferometry using waveguides and couplers within a photonic chip, and will provide generalisable insights that are applicable to future nullers. However, to produce high starlight suppression and deeper nulls, correcting seeing-induced wavefront error is of paramount importance. Here we present the design for the real-time control loop of the GLINT instrument which performs fringe tracking and active fringe modulation to correct wavefront errors. To allow for user interaction, the control loop is encapsulated within a graphical user interface, enabling manual, automatic, and simulated functionality, and it utilises the MILK framework for high speed data acquisition and control.
AB - Directly imaging habitable-zone exoplanets and obtaining their spectra is a central goal in exoplanet science, but is extremely challenging due to the high contrasts and small angular separations which must be achieved. Nulling interferometry is a solution which suppresses on-axis starlight through destructive interference such that the star is 'nulled out'. The Guided Light Interferometric Nulling Technology Instrument (GLINT) at the 8.2-meter Subaru telescope performs nulling interferometry using waveguides and couplers within a photonic chip, and will provide generalisable insights that are applicable to future nullers. However, to produce high starlight suppression and deeper nulls, correcting seeing-induced wavefront error is of paramount importance. Here we present the design for the real-time control loop of the GLINT instrument which performs fringe tracking and active fringe modulation to correct wavefront errors. To allow for user interaction, the control loop is encapsulated within a graphical user interface, enabling manual, automatic, and simulated functionality, and it utilises the MILK framework for high speed data acquisition and control.
KW - nulling interferometry
KW - photonics
KW - real-time control
UR - http://www.scopus.com/inward/record.url?scp=85208424979&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85208424979&partnerID=8YFLogxK
U2 - 10.1117/12.3019348
DO - 10.1117/12.3019348
M3 - Conference contribution
AN - SCOPUS:85208424979
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Optical and Infrared Interferometry and Imaging IX
A2 - Kammerer, Jens
A2 - Sallum, Stephanie
A2 - Sanchez-Bermudez, Joel
PB - SPIE
T2 - Optical and Infrared Interferometry and Imaging IX 2024
Y2 - 17 June 2024 through 22 June 2024
ER -