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Demonstration of a speckle nulling algorithm and Kalman filter estimator with a fiber injection unit for observing exoplanets with high-dispersion coronagraphy

Xin, Yeyuan and Llop Sayson, Jorge and Klimovich, Nikita and Mawet, Dimitri and Ruane, Garreth and Delorme, Jacques and Jovanovic, Nemanja (2018) Demonstration of a speckle nulling algorithm and Kalman filter estimator with a fiber injection unit for observing exoplanets with high-dispersion coronagraphy. In: Adaptive Optics Systems VI. Proceedings of SPIE. No.10703. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 107036Z. ISBN 9781510619593. http://resolver.caltech.edu/CaltechAUTHORS:20190103-153503823

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Abstract

High-dispersion coronagraphy (HDC) combines high contrast imaging techniques with high spectral resolution spectroscopy to observe exoplanets and determine characteristics such as chemical composition, temperature, and rotational velocities. It has been demonstrated in lab that with monochromatic light, a fiber injection unit (FIU), in which an optical fiber is used to couple to light from the exoplanet, could be used to direct exoplanet light to a high-resolution spectrograph, with robust performance and speckle suppression that exceeds conventional image-based speckle nulling. We now demonstrate in lab a FIU based speckle nulling scheme with a Kalman filter estimator. We currently find that speckle nulling with a Kalman filter is more stable and outperforms traditional speckle nulling by 10% in suppression in the presence of white detector noise.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.2312357DOIArticle
ORCID:
AuthorORCID
Mawet, Dimitri0000-0002-8895-4735
Ruane, Garreth0000-0003-4769-1665
Additional Information:© 2018 Society of Photo-Optical Instrumentation Engineers (SPIE). he authors would like to acknowledge the financial support of the Caltech Student Faculty Program (SFP) office and the Jean Dixon SURF Fellowship.
Funders:
Funding AgencyGrant Number
Caltech Summer Undergraduate Research Fellowship (SURF)UNSPECIFIED
Jean Dixon SURF FellowshipUNSPECIFIED
Subject Keywords:vortex coronagraph, fiber injection unit, speckle nulling, Kalman filter, spectrograph, exoplanet characterization
Record Number:CaltechAUTHORS:20190103-153503823
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190103-153503823
Official Citation:Yeyuan Xin, Jorge Llop Sayson, Nikita Klimovich, Dimitri Mawet, Garreth Ruane, Jacques Delorme, Nemanja Jovanovic, "Demonstration of a speckle nulling algorithm and Kalman filter estimator with a fiber injection unit for observing exoplanets with high-dispersion coronagraphy," Proc. SPIE 10703, Adaptive Optics Systems VI, 107036Z (18 July 2018); doi: 10.1117/12.2312357
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92051
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:07 Jan 2019 16:04
Last Modified:07 Jan 2019 16:04

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