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Proceedings Paper

Dopant interactions in high-power laser fibers
Author(s): Johannes Kirchhof; Sonja Unger; Anka Schwuchow; Sylvia Jetschke; Bruno Knappe
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Paper Abstract

Rare earth doped silica based fiber lasers and amplifiers with very high output power and excellent beam quality are efficient devices for a variety of applications in industry, science and medicine. During the last years, important progress was possible by new design concepts but also by carefully tailoring the material properties. Aspects of material and technology development concerning the interaction of different dopants and co-dopants will be discussed in the following. Our discussion concentrates on the optical properties of the laser fiber as refractive index, absorption and emission of the rare earths and especially on phenomena concerning the background loss of the fibers. We have found a strong rare earth specific loss component which remarkably depends on the kind and the ratio of the co-dopants. The relations of this background loss to material composition and fabrication technology are demonstrated and discussed on an empirical base.

Paper Details

Date Published: 4 April 2005
PDF: 12 pages
Proc. SPIE 5723, Optical Components and Materials II, (4 April 2005); doi: 10.1117/12.590021
Show Author Affiliations
Johannes Kirchhof, Institut fuer Physikalische Hochtechnologie e.V. (Germany)
Sonja Unger, Institut fuer Physikalische Hochtechnologie e.V. (Germany)
Anka Schwuchow, Institut fuer Physikalische Hochtechnologie e.V. (Germany)
Sylvia Jetschke, Institut fuer Physikalische Hochtechnologie e.V. (Germany)
Bruno Knappe, Institut fuer Physikalische Hochtechnologie e.V. (Germany)

Published in SPIE Proceedings Vol. 5723:
Optical Components and Materials II
Shibin Jiang; Michel J.F. Digonnet, Editor(s)

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