An innovative integral field unit upgrade with 3D-printed micro-lenses for the RHEA at Subaru

  title={An innovative integral field unit upgrade with 3D-printed micro-lenses for the RHEA at Subaru},
  author={Theodoros Anagnos and Pascal Maier and Philipp Hottinger and Christopher H. Betters and Tobias Feger and Sergio G. Leon-Saval and Itandehui Gris-S{\'a}nchez and Stephanos Yerolatsitis and Julien Lozi and Timothy A. Birks and S{\'e}bastien Vievard and Nemanja Jovanovic and Adam D. Rains and Michael J. Ireland and Robert J. Harris and Blaise Anthony C. Kuo Tiong and Olivier Guyon and Barnaby R. M. Norris and Sebastiaan Y. Haffert and Matthias Blaicher and Yulin Xu and Moritz Straub and Jorg-Uwe Pott and Oliver Sawodny and Philip L. Neureuther and David Coutts and Christian Schwab and Christian Koos and Andreas Quirrenbach},
  booktitle={Astronomical Telescopes + Instrumentation},
In the new era of Extremely Large Telescopes (ELTs) currently under construction, challenging requirements drive spectrograph designs towards techniques that efficiently use a facility's light collection power. Operating in the single-mode (SM) regime, close to the diffraction limit, reduces the footprint of the instrument compared to a conventional high-resolving power spectrograph. The custom built injection fiber system with 3D-printed microlenses on top of it for the replicable high… 

3D-M3: high-spatial-resolution spectroscopy with extreme AO and 3D-printed micro-lenslets.

An integral field unit designed to couple light with a minimal plate scale from the SCExAO facility at NIR wavelengths to a single-mode spectrograph is introduced, allowing for rapid development with low cost.

Fundamental limit of single-mode integral-field spectroscopy

  • S. Haffert
  • Physics
    Journal of the Optical Society of America B
  • 2021
There are several high-performance adaptive optics systems that deliver diffraction-limited imaging on ground-based telescopes, which renewed the interest of single-mode fiber (SMF) spectroscopy for

ELVIS: the exoplanets at LBT with a visible IFS for SHARK-VIS

The Exoplanets at LBT with a Visible IFS for SHARK-VIS (ELVIS) is an add-on imaging spectrograph to be integrated in the new LBT high-contrast high-resolution AO-assisted imager SHARK-VIS. ELVIS is



Printed freeform lens arrays on multi-core fibers for highly efficient coupling in astrophotonic systems.

Facet-attached lens arrays fabricated by two-photon polymerization provide close to 100% fill-fraction along with efficiencies of up to 73% (down to 1.4 dB loss) for coupling of light from free space into an MCF core.

Efficient injection from large telescopes into single-mode fibres: Enabling the era of ultra-precision astronomy

Photonic technologies offer numerous advantages for astronomical instruments such as spectrographs and interferometers owing to their small footprints and diverse range of functionalities. Operating

The Photonic TIGER: a multicore fiber-fed spectrograph

We present a proof of concept compact diffraction limited high-resolution fiber-fed spectrograph by using a 2D multicore array input. This high resolution spectrograph is fed by a 2D pseudo-slit, the

Precision single mode fibre integral field spectroscopy with the RHEA spectrograph

The RHEA Spectrograph is a single-mode echelle spectrograph designed to be a replicable and cost effective method of undertaking precision radial velocity measurements. Two versions of RHEA currently

The Subaru Coronagraphic Extreme Adaptive Optics System: Enabling High-Contrast Imaging on Solar-System Scales

The Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) instrument is a multipurpose high-contrast imaging platform designed for the discovery and detailed characterization of exoplanetary systems

RHEA: the ultra-compact replicable high-resolution exoplanet and Asteroseismology spectrograph

We present the opto-mechanical design and the characterization of the Replicable High-resolution Exoplanet and Asteroseismology (RHEA) spectrograph. RHEA is an ultra-compact fiber-fed echelle

Optical spectroscopy with a near-single-mode fiber-feed and adaptive optics

We report on first astronomical results with a cross-dispersed optical echelle spectrograph fed by a near single-mode fiber. We also present on a novel design of a new adaptive optics (AO) optimized

Micro-lens arrays as tip-tilt sensor for single mode fiber coupling

We introduce a design for a tip-tilt sensor with integrated single-mode fiber coupling for use with the front-end prototype of the iLocater spectrograph at the Large Binocular Telescope to detect

Commissioning status of Subaru laser guide star adaptive optics system

The current status of commissioning and recent results in performance of Subaru laser guide star adaptive optics system is presented. After the first light using natural guide stars with limited

In situ 3D nanoprinting of free-form coupling elements for hybrid photonic integration

By exploiting two-photon laser lithography for in situ printing of facet-attached beam-shaping elements, hybrid photonic integration can now be realized, opening opportunities for the automated assembly of photonic multi-chip systems with unprecedented performance and versatility.