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

Theodoros Anagnos*, Pascal Maier, Philipp Hottinger, Christopher H. Betters, Tobias Feger, Sergio G. Leon-Saval, Itandehui Gris-Sanchez, Stephanos Yerolatsitis, Julien Lozi, Tim A. Birks, Sébastien Vievard, Nemanja Jovanovic, Adam D. Rains, Michael J. Ireland, Robert J. Harris, Blaise C. Kuo Tiong, Olivier Guyon, Barnaby Norris, Sebastiaan Y. Haffert, Matthias BlaicherYulin Xu, Moritz Straub, Jörg Uwe Pott, Oliver Sawodny, Philip L. Neureuther, David W. Coutts, Christian Schwab, Christian Koos, Andreas Quirrenbach

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)

Abstract

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-resolution exoplanet and asteroseismology spectrograph (RHEA) at Subaru in combination with extreme adaptive optics of SCExAO, proved its high efficiency in a lab environment, manifesting up to ∼77% of the theoretical predicted performance.

Original languageEnglish
Title of host publicationAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV
EditorsRamón Navarro, Roland Geyl
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-10
Number of pages10
ISBN (Electronic)9781510636903
ISBN (Print)9781510636897
DOIs
Publication statusPublished - 13 Dec 2020
EventAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020 - Virtual, Online, United States
Duration: 14 Dec 202022 Dec 2020

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume11451
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceAdvances in Optical and Mechanical Technologies for Telescopes and Instrumentation IV 2020
CountryUnited States
CityVirtual, Online
Period14/12/2022/12/20

Keywords

  • astrophotonics
  • diffraction-limited spectrograph
  • fiber injection
  • integral field unit
  • micro-lenslets
  • optical fibers
  • radial velocity
  • SCExAO
  • spectroscopy

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