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Proceedings Paper

Efficiency improvement in Thulium-doped fibers via excited state pumping
Author(s): C. Jauregui; F. Stutzki; F. Jansen; J. Limpert; A. Tünnermann
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Paper Abstract

In this contribution we propose a new way to simultaneously increase (almost double) the amplification efficiency and reduce the thermal issues of Thulium-doped fibers. This technique is based on pumping the excited state of the Thulium fiber, in order to bring the ions from the pump level to the upper laser level via stimulated emission instead of via phononic relaxation processes. Our simulations show that using this technique the efficiency of the amplification process can be increased by almost a factor of 2.

Paper Details

Date Published: 7 March 2014
PDF: 6 pages
Proc. SPIE 8961, Fiber Lasers XI: Technology, Systems, and Applications, 89611B (7 March 2014); doi: 10.1117/12.2036724
Show Author Affiliations
C. Jauregui, Friedrich-Schiller-Univ. Jena (Germany)
F. Stutzki, Friedrich-Schiller-Univ. Jena (Germany)
F. Jansen, Friedrich-Schiller-Univ. Jena (Germany)
J. Limpert, Friedrich-Schiller-Univ. Jena (Germany)
Helmholtz-Institut Jena (Germany)
A. Tünnermann, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Helmholtz-Institut Jena (Germany)
Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)

Published in SPIE Proceedings Vol. 8961:
Fiber Lasers XI: Technology, Systems, and Applications
Siddharth Ramachandran, Editor(s)

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