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 language | English (US) |
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Title of host publication | Adaptive Optics Systems V |
Editors | Enrico Marchetti, Jean-Pierre Veran, Laird M. Close |
Publisher | SPIE |
ISBN (Electronic) | 9781510601970 |
DOIs | |
State | Published - 2016 |
Event | Adaptive Optics Systems V - Edinburgh, United Kingdom Duration: Jun 26 2016 → Jul 1 2016 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 9909 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Other
Other | Adaptive Optics Systems V |
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Country/Territory | United Kingdom |
City | Edinburgh |
Period | 6/26/16 → 7/1/16 |
Bibliographical note
Publisher Copyright:© 2016 SPIE.
Keywords
- Adaptive Optics
- Fiber Optics
- ILocater
- Large Binocular Telescope
- Single-Mode Fibers