Astrophotonic Technologies

Abstract

Over the past two decades, photonics have been developed as technological solutions for astronomical instrumentation for, e.g., near-infrared spectroscopy and long baseline interferometry. With increasing instrument capabilities, large quantities of high precision optical components are required to guide, manipulate, and analyze the light from astronomical sources. Photonic integrated circuits (PICs) and fiber-based devices offer enormous potential for astronomical instrumentation, as they can reduce the amount of bulky free-space optics and pave the way for innovative solutions. Astrophotonic devices are particularly interesting for interferometry due to their compact design on the centimeter scale, even for a large number of telescope inputs. Already, astrophotonic components are integrated in high-end instruments at the VLTI and at the CHARA Array. Photonic beam combiners at wavelengths from visible to mid-infrared have been fabricated using lithographic techniques or ultrafast-laser inscription, with several components tested on-sky. This paper will provide a glimpse into the growing field of astrophotonics, its current status and potential for new technologies.

Proc. of SPIE 13095, Optical and Infrared Interferometry and Imaging IX, Astronomical Telescopes + Instrumentation, Yokohama (Japan), 16-21 June 2024 (in press). 24 pages, 12 figures

References in corpus (29)

• The Photonic Lantern
• First direct detection of an exoplanet by optical interferometry; Astrometry and K-band spectroscopy of HR8799 e
• GNOSIS: the first instrument to use fibre Bragg gratings for OH suppression
• First on-sky demonstration of an integrated-photonic nulling-interferometer: The GLINT instrument
• A crucial test for astronomical spectrograph calibration with frequency combs
• 2023 Astrophotonics Roadmap: pathways to realizing multi-functional integrated astrophotonic instruments
• Astrointerferometry with discrete optics
• High dynamic range imaging by pupil single-mode filtering and remapping
• First demonstration of OH suppression in a high efficiency near-infrared spectrograph
• Starlight coupling through atmospheric turbulence into few-mode fibers and photonic lanterns in the presence of partial adaptive optics correction
• High-performance 3D waveguide architecture for astronomical pupil-remapping interferometry
• Astrophotonics: molding the flow of light in astronomical instruments
• Asgard/NOTT: L-band nulling interferometry at the VLTI I. Simulating the expected high-contrast performance
• Potential of commercial SiN MPW platforms for developing mid/high-resolution integrated photonic spectrographs for astronomy
• Photonic ring resonator filters for astronomical OH suppression
• Astronomical photonics in the context of infrared interferometry and high-resolution spectroscopy
• Astrophotonics: the rise of integrated photonics in astronomy
• Achromatic photonic tricouplers for application in nulling interferometry
• Imaging the inner astronomical unit of Herbig Be star HD 190073
• Diffraction-limited integral-field spectroscopy for extreme adaptive optics systems with the Multi-Core fiber-fed Integral-Field Unit
• Dynamical Surface Imaging of lambda Andromedae
• Design, simulation and characterization of integrated photonic spectrographs for Astronomy II: Low-aberration Generation-II AWG devices with three stigmatic points
• Large Interferometer For Exoplanets (LIFE): VII. Practical implementation of a five-telescope kernel-nulling beam combiner with a discussion on instrumental uncertainties and redundancy benefits
• Asgard/NOTT: L-band nulling interferometry at the VLTI. II. Warm optical design and injection system
• Optimal SMF packing in photonic lanterns: comparing theoretical topology to practical packing arrangements
• Exploring intermediate (5-40AU) scales around AB Aurigae with the Palomar Fiber Nuller
• 3D-M3: High-spatial resolution spectroscopy with extreme AO and 3D printed micro-lenslets
• Six-telescope integrated optics beam combiner fabricated using ultrafast laser inscription for J- and H-band astronomy
• Athermal package for OH suppression filters in astronomy part 1: design