Share Email Print
cover

Proceedings Paper

Multi-resolution waveguide image slicer for the PEPSI instrument
Author(s): Erik Beckert; Klaus G. Strassmeier; Manfred Woche; Gerd Harnisch; Marcel Hornaff; Michael Weber; Stuart Barnes
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A waveguide image slicer with resolutions up to 270.000 (planned: 300.000) for the fiber fed PEPSI echelle spectrograph at the LBT and single waveguide thicknesses of down to 70 μm has been manufactured and tested. The waveguides were macroscopically prepared, stacked up to an order of seven and thinned back to square stack cross sections. A high filling ratio was achieved by realizing homogenous adhesive gaps of 3.6 μm, using index matching adhesives for TIR within the waveguides. The image slicer stacks are used in immersion mode and are miniaturized to enable implementation in a set of 2x8. The overall efficiency is between 92 % and 96 %.

Paper Details

Date Published: 22 July 2016
PDF: 7 pages
Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 99125O (22 July 2016); doi: 10.1117/12.2231096
Show Author Affiliations
Erik Beckert, Fraunhofer Institute for Applied Optics and Precision Engineering IOF (Germany)
Klaus G. Strassmeier, Leibniz-Institut für Astrophysik Potsdam (Germany)
Manfred Woche, Leibniz-Institut für Astrophysik Potsdam (Germany)
Gerd Harnisch, Fraunhofer Institute for Applied Optics and Precision Engineering IOF (Germany)
Marcel Hornaff, Fraunhofer Institute for Applied Optics and Precision Engineering IOF (Germany)
Michael Weber, Leibniz-Institut für Astrophysik Potsdam (Germany)
Stuart Barnes, Leibniz-Institut für Astrophysik Potsdam (Germany)


Published in SPIE Proceedings Vol. 9912:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Ramón Navarro; James H. Burge, Editor(s)

© SPIE. Terms of Use
Back to Top