• English
  • Deutsch
  • Log In
    Password Login
    or
  • Research Outputs
  • Projects
  • Researchers
  • Institutes
  • Statistics
Repository logo
Fraunhofer-Gesellschaft
  1. Home
  2. Fraunhofer-Gesellschaft
  3. Scopus
  4. Technical layout and fabrication of a compact all-glass four-channel beam splitter based on a Kösters design
 
  • Details
  • Full
Options
2022
Journal Article
Titel

Technical layout and fabrication of a compact all-glass four-channel beam splitter based on a Kösters design

Abstract
We report on the design and fabrication of a novel all-glass four-channel beam splitter based on a Kösters prism for use in space. The Kösters prism, which consists of three pairs of individual prisms, is used to separate an incoming telescope beam into four spectral channels (λ = 800-1700 nm) with the goal to obtain a multi-band photometry of cosmic sources in the optical/near-infrared bands. We performed optical design studies to evaluate the influence of geometrical tolerances of the six individual prisms on the image quality. A stray light analysis revealed the impact of the composition on the overall optical performance. Mechanical design studies benchmarked possible mounting strategies. We considered optical adhesives, soldering and clamping. The influence of the mechanical loads during a rocket launch as well as thermal loads at 140 K (the operation temperature of the optical element) were studied. We optimized the coating properties of the prisms by considering the results from the optical design study as well as the technological requirements for the direct bonding of the prisms. Bonding strategies to realize the prism pairs were developed and successfully tested. A demonstrator Kösters prism was manufactured and is ready to validate its optical performance.
Author(s)
Rothhardt, Carolin
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Klose, S.
Thüringer Landessternwarte Tautenburg
Satzer, Britta
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Schmidl, S.
Thüringer Landessternwarte Tautenburg
Grabowski, Kevin
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Birckigt, Pascal
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Hilpert, Enrico
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Lippmann, Uwe
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Schlegel, Ralph
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Shestaeva, Svetlana
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Schwinde, Stefan
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Risse, Stefan
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Zeitschrift
CEAS space journal
Thumbnail Image
DOI
10.1007/s12567-022-00440-5
Language
English
google-scholar
Fraunhofer-Institut für Angewandte Optik und Feinmechanik IOF
Tags
  • Coating

  • Direct bonding

  • Kösters prism

  • Mechanical design

  • Optical design

  • Cookie settings
  • Imprint
  • Privacy policy
  • Api
  • Send Feedback
© 2022