Share Email Print
cover

Proceedings Paper • new

Development of a broadband dielectric beam splitter with reduced spectral wavefront error
Author(s): Michael Vergöhl; Chris Britze; Stefan Bruns; Jennifer Ahrens; Bernd Schäfer; Klaus Mann; Volker Kirschner
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A broadband beam splitter coating with the reflecting range from 400 to 900 nm and the transmitting range from 920 to 2300 nm was developed. To avoid absorptive losses at low wavelengths, Ta2O5 was chosen as the high index material. A new setup based on a Hartmann-Shack sensor was built to measure the wavefront error and its spectral dependence. An area of 120 mm diameter was measured. While in a standard coating, large resonant-like wavefront errors occur, an optimized coating with significantly reduced spectral wavefront error was designed and produced.

Paper Details

Date Published: 6 June 2018
PDF: 8 pages
Proc. SPIE 10691, Advances in Optical Thin Films VI, 1069118 (6 June 2018); doi: 10.1117/12.2313668
Show Author Affiliations
Michael Vergöhl, Fraunhofer Institute for Surface Engineering and Thin Films (Germany)
Chris Britze, Fraunhofer Institute for Surface Engineering and Thin Films (Germany)
Stefan Bruns, Fraunhofer Institute for Surface Engineering and Thin Films (Germany)
Jennifer Ahrens, Laser-Lab. Göttingen e.V. (Germany)
Bernd Schäfer, Laser-Lab. Göttingen e.V. (Germany)
Klaus Mann, Laser-Lab. Göttingen e.V. (Germany)
Volker Kirschner, European Space Research and Technology Ctr. (Netherlands)


Published in SPIE Proceedings Vol. 10691:
Advances in Optical Thin Films VI
Michel Lequime; H. Angus Macleod; Detlev Ristau, Editor(s)

© SPIE. Terms of Use
Back to Top