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Building hybridized 28-baseline pupil-remapping photonic interferometers for future high-resolution imaging

Cvetojevic, Nick and Norris, Barnaby R. M. and Gross, Simon and Jovanovic, Nemanja and Arriola, Alexander and Lacour, Sylvestre and Kotani, Takayuki and Lawrence, Jon S. and Withford, Michael J. and Tuthill, Peter (2021) Building hybridized 28-baseline pupil-remapping photonic interferometers for future high-resolution imaging. Applied Optics, 60 (19). D33-D42. ISSN 1559-128X. doi:10.1364/ao.422729.

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One key advantage of single-mode photonic technologies for interferometric use is their ability to easily scale to an ever-increasing number of inputs without a major increase in the overall device size, compared to traditional bulk optics. This is particularly important for the upcoming extremely large telescope (ELT) generation of telescopes currently under construction. We demonstrate the fabrication and characterization of a hybridized photonic interferometer, with eight simultaneous inputs, forming 28 baselines, which is the largest amount to date, to the best of our knowledge. Using different photonic fabrication technologies, we combine a 3D pupil remapper with a planar eight-port ABCD pairwise beam combiner, along with the injection optics necessary for telescope use, into a single integrated monolithic device. We successfully realized a combined device called Dragonfly, which demonstrates a raw instrumental closure-phase stability down to 0.9° over 8π phase piston error, relating to a detection contrast of ∼6.5×10⁻⁴ on an adaptive-optics-corrected 8 m telescope. This prototype successfully demonstrates advanced hybridization and packaging techniques necessary for on-sky use for high-contrast detection at small inner working angles, ideally complementing what can currently be achieved using coronagraphs.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Cvetojevic, Nick0000-0002-7465-4176
Norris, Barnaby R. M.0000-0002-8352-7515
Gross, Simon0000-0001-5130-183X
Jovanovic, Nemanja0000-0001-5213-6207
Arriola, Alexander0000-0002-7082-3315
Lacour, Sylvestre0000-0002-6948-0263
Kotani, Takayuki0000-0001-6181-3142
Lawrence, Jon S.0000-0002-6998-6993
Withford, Michael J.0000-0002-6414-8739
Tuthill, Peter0000-0001-7026-6291
Additional Information:© 2021 Optical Society of America. Received 15 February 2021; revised 14 April 2021; accepted 17 April 2021; posted 19 April 2021 (Doc. ID 422729); published 3 May 2021. This research was supported by the Australian Research Council’s Centre of Excellence Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS). The work was performed in part at the OptoFab node of the Australian National Fabrication Facility utilizing Commonwealth as well as NSW state government funding. Funding: European Research Council (CoG-683029); Macquarie University (9201300682); Australian Research Council (CE110001018, DE160100714). Data Availability: Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request. The authors declare no conflicts of interest.
Funding AgencyGrant Number
European Research Council (ERC)683029
Macquarie University9201300682
Australian Research CouncilCE110001018
Australian Research CouncilDE160100714
Issue or Number:19
Record Number:CaltechAUTHORS:20210803-222444453
Persistent URL:
Official Citation:Nick Cvetojevic, Barnaby R. M. Norris, Simon Gross, Nemanja Jovanovic, Alexander Arriola, Sylvestre Lacour, Takayuki Kotani, Jon S. Lawrence, Michael J. Withford, and Peter Tuthill, "Building hybridized 28-baseline pupil-remapping photonic interferometers for future high-resolution imaging," Appl. Opt. 60, D33-D42 (2021); DOI: 10.1364/ao.422729
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:110143
Deposited By: Tony Diaz
Deposited On:04 Aug 2021 19:38
Last Modified:04 Aug 2021 19:38

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