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Proceedings Paper

Profile homogenization and monitoring for a multiple 100 J diode-laser pumping system
Author(s): M. Siebold; S. Podleska; J. Hein; R. Bödefeld; M. Hornung; M. Schnepp; R. Sauerbrey
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Paper Abstract

Multi-pass amplification to the 10 joule level for a femto-second CPA laser system is aimed at diode-pumping Yb3+ doped fluoride-phosphate glass with an energy of 240 J at 940 nm. Collimated pump light of 1000 laser diode bars is focussed onto an a circular glass disk with 28mm diameter. A two-sided ring shaped assembly of diode stacks and attached optics is applied for longitudinal pumping. We developed a computer aided optimization routine for positioning single pump foci with size of 4 × 8mm2 to achieve a smooth homogeneously distributed top-hat shaped pump profile with a diameter of 18 mm. For monitoring purpose the pulse energy of each diode stack is measured with a solar panel placed behind a reflecting mirror.

Paper Details

Date Published: 15 October 2005
PDF: 8 pages
Proc. SPIE 5962, Optical Design and Engineering II, 59622I (15 October 2005); doi: 10.1117/12.623777
Show Author Affiliations
M. Siebold, Friedrich-Schiller-Univ. Jena (Germany)
S. Podleska, Friedrich-Schiller-Univ. Jena (Germany)
J. Hein, Friedrich-Schiller-Univ. Jena (Germany)
R. Bödefeld, Friedrich-Schiller-Univ. Jena (Germany)
M. Hornung, Friedrich-Schiller-Univ. Jena (Germany)
M. Schnepp, Friedrich-Schiller-Univ. Jena (Germany)
R. Sauerbrey, Friedrich-Schiller-Univ. Jena (Germany)

Published in SPIE Proceedings Vol. 5962:
Optical Design and Engineering II
Laurent Mazuray; Rolf Wartmann, Editor(s)

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