Design and testing of an on-sky astrophotonic telescope platform for on-chip instrumentation

Erin M. Tonita; Volodymyr Artyshchuk; John Weber; Siegfried Janz; Adam Densmore; Suresh Sivanandam; Ernst de Mooij; Jens H. Schmid; Pavel Cheben; DanXia Xu; Karin Hinzer; Ross Cheriton

doi:10.1117/12.2622465

29 August 2022 Design and testing of an on-sky astrophotonic telescope platform for on-chip instrumentation

Erin M. Tonita, Volodymyr Artyshchuk, John Weber, Siegfried Janz, Adam Densmore, Suresh Sivanandam, Ernst de Mooij, Jens H. Schmid, Pavel Cheben, DanXia Xu, Karin Hinzer, Ross Cheriton

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121882Z (2022) https://doi.org/10.1117/12.2622465
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

Bulk optical astronomical instruments face significant cost, complexity, flexure and alignment challenges with increasing next generation telescope sizes. Astrophotonics can mitigate these issues by using compact optical fiber or chip-based instruments. Here we present the design and development of a single-mode fiber coupled optical telescope system (ARTEMIS) designed for the demonstration of novel integrated astrophotonic instrumentation. Using a 4 cm fiber collimator as a telescope, we show on-sky measurements from an integrated astrophotonic chip. We have demonstrated the ability to detect <0.002% absorption depth changes of telluric CO₂ lines using a sub-centimeter scale astrophotonic correlation spectroscopy chip with the sun as a background light source. These results provide a route towards demonstrating astrophotonic instrumentation on the larger 35 cm ARTEMIS telescope for the atmospheric characterization of smaller, fainter targets such as planets.

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Erin M. Tonita, Volodymyr Artyshchuk, John Weber, Siegfried Janz, Adam Densmore, Suresh Sivanandam, Ernst de Mooij, Jens H. Schmid, Pavel Cheben, DanXia Xu, Karin Hinzer, and Ross Cheriton "Design and testing of an on-sky astrophotonic telescope platform for on-chip instrumentation", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121882Z (29 August 2022); https://doi.org/10.1117/12.2622465

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