On-sky single-mode fiber coupling measurements at the Large Binocular Telescope

Andrew Bechter, Jonathan Crass, Ryan Ketterer, Justin R. Crepp, Robert O. Reynolds, Eric Bechter, Philip M Hinz, Fernando Pedichini, Michael Foley, Elliott Runburg, Eleanya E. Onuma, Scott Gaudi, Giuseppina Micela, Isabella Pagano, Charles E. Woodward

Research output: Chapter in Book/Report/Conference proceedingConference contribution

16 Scopus citations

Abstract

The demonstration of efficient single-mode fiber (SMF) coupling is a key requirement for the development of a compact, ultra-precise radial velocity (RV) spectrograph. iLocater is a next generation instrument for the Large Binocular Telescope (LBT) that uses adaptive optics (AO) to inject starlight into a SMF. In preparation for commissioning iLocater, a prototype SMF injection system was installed and tested at the LBT in the Y-band (0.970-1.065 μm). This system was designed to verify the capability of the LBT AO system as well as characterize on-sky SMF coupling efficiencies. SMF coupling was measured on stars with variable airmasses, apparent magnitudes, and seeing conditions for six half-nights using the Large Binocular Telescope Interferometer. We present the overall optical and mechanical performance of the SMF injection system, including details of the installation and alignment procedure. A particular emphasis is placed on analyzing the instrument's performance as a function of telescope elevation to inform the final design of the fiber injection system for iLocater.

Original languageEnglish (US)
Title of host publicationAdaptive Optics Systems V
PublisherSPIE
Volume9909
ISBN (Electronic)9781510601970
DOIs
StatePublished - 2016
EventAdaptive Optics Systems V - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Other

OtherAdaptive Optics Systems V
CountryUnited Kingdom
CityEdinburgh
Period6/26/167/1/16

Keywords

  • Adaptive Optics
  • Fiber Optics
  • ILocater
  • Large Binocular Telescope
  • Single-Mode Fibers

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Bechter, A., Crass, J., Ketterer, R., Crepp, J. R., Reynolds, R. O., Bechter, E., Hinz, P. M., Pedichini, F., Foley, M., Runburg, E., Onuma, E. E., Gaudi, S., Micela, G., Pagano, I., & Woodward, C. E. (2016). On-sky single-mode fiber coupling measurements at the Large Binocular Telescope. In Adaptive Optics Systems V (Vol. 9909). [99092X] SPIE. https://doi.org/10.1117/12.2233153