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Proceedings Paper

Effect of concentration on the efficiency of erbium-doped silica fiber lasers
Author(s): Jefferson L. Wagener; Paul F. Wysocki; Michel J. F. Digonnet; H. John Shaw; David J. DiGiovanni
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Paper Abstract

Comparison of the output characteristics of different erbium doped fiber lasers show that the threshold pump power increases (by a factor of 4.6) and the conversion efficiency decreases (by a factor of 1.5) as the erbium concentration is increased from around 150 to 1040 mole ppm Er2O3. We propose that these two effects are mostly due to rapid interaction (perhaps upconversion) between a subset of paired ions. This work suggests that for Al-Ge- doped silica fibers, concentrations of 150 mole ppm or less should be used for optimum output power. A fiber with this concentration produced a low-threshold laser with a total power conversion efficiency of 90.4%.

Paper Details

Date Published: 23 March 1993
PDF: 10 pages
Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); doi: 10.1117/12.141148
Show Author Affiliations
Jefferson L. Wagener, Stanford Univ. (United States)
Paul F. Wysocki, Stanford Univ. (United States)
Michel J. F. Digonnet, Stanford Univ. (United States)
H. John Shaw, Stanford Univ. (United States)
David J. DiGiovanni, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1789:
Fiber Laser Sources and Amplifiers IV
Michel J. F. Digonnet; Elias Snitzer, Editor(s)

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