On-sky experiment of the discrete beam combiner: lessons learned and strategies for improved calibration of the transfer function

Abani Shankar Nayak; Lucas Labadie; Tarun K. Sharma; Simone Piacentini; Giacomo Corrielli; Roberto Osellame; Ettore Pedretti; Aline N. Dinkelaker; Eloy Hernandez; Kalaga V. Madhav; Martin M. Roth

doi:10.1117/12.2629673

26 August 2022 On-sky experiment of the discrete beam combiner: lessons learned and strategies for improved calibration of the transfer function

Abani Shankar Nayak, Lucas Labadie, Tarun K. Sharma, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Ettore Pedretti, Aline N. Dinkelaker, Eloy Hernandez, Kalaga V. Madhav, Martin M. Roth

Author Affiliations +

Proceedings Volume 12183, Optical and Infrared Interferometry and Imaging VIII; 121832H (2022) https://doi.org/10.1117/12.2629673
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

We recently performed tests of the discrete beam combiner (DBC) through an on-sky experiment using a 4-input pupil remappers-based integrated optics device. Here, we report on the lessons learned, as well as visibilities and closure phase results for our stellar target, Vega. Through complementary simulations, we analyze how the residual phase errors, input power imbalance at the waveguides, slow environmental changes, and different photon levels affect the performance of the DBC. This is an important aspect to improve future on-sky calibration strategies for this type of beam combiner, in particular when combining a large number of apertures.

Citation Download Citation

Abani Shankar Nayak, Lucas Labadie, Tarun K. Sharma, Simone Piacentini, Giacomo Corrielli, Roberto Osellame, Ettore Pedretti, Aline N. Dinkelaker, Eloy Hernandez, Kalaga V. Madhav, and Martin M. Roth "On-sky experiment of the discrete beam combiner: lessons learned and strategies for improved calibration of the transfer function", Proc. SPIE 12183, Optical and Infrared Interferometry and Imaging VIII, 121832H (26 August 2022); https://doi.org/10.1117/12.2629673

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available