Effect of concentration on the efficiency of erbium-doped silica fiber lasers

Jefferson L. Wagener; Paul F. Wysocki; Michel J. F. Digonnet; H. John Shaw; David J. DiGiovanni

doi:10.1117/12.141148

23 March 1993 Effect of concentration on the efficiency of erbium-doped silica fiber lasers

Jefferson L. Wagener, Paul F. Wysocki, Michel J. F. Digonnet, H. John Shaw, David J. DiGiovanni

Proceedings Volume 1789, Fiber Laser Sources and Amplifiers IV; (1993) https://doi.org/10.1117/12.141148
Event: Fibers '92, 1992, Boston, MA, United States

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%.

Citation Download Citation

Jefferson L. Wagener, Paul F. Wysocki, Michel J. F. Digonnet, H. John Shaw, and David J. DiGiovanni "Effect of concentration on the efficiency of erbium-doped silica fiber lasers", Proc. SPIE 1789, Fiber Laser Sources and Amplifiers IV, (23 March 1993); https://doi.org/10.1117/12.141148

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