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Proceedings Paper

Yb-free, SLM EDFA: comparison of 980-, 1470- and 1530-nm excitation for the core- and clad-pumping
Author(s): M. Dubinskii; V. Ter-Mikirtychev; J. Zhang; I. Kudryashov
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Paper Abstract

We present the results of the experimental study and comparison of Yb-free, Er-doped, all-fiber, alignment free, single frequency (SF) fiber amplifiers operating under 980-, 1470- and 1530-nm pumping for the core- and clad-pumping architectures. In the single-mode core-pumped configuration Er-doped fiber amplifiers demonstrated 52% and 60% pump to output efficiencies for 980 and 1480 nm pump wavelength, respectively, producing over 140 mW of SF output power at seed wavelength ~1560 nm and over 180 mW at seed wavelength 1605 nm for 300 mW of pump power. At the same time, when clad pumped, Er-doped 20/125 DC LMA gain fiber demonstrates laser efficiencies of 22.4% pumped at 980 nm - up to 20 W of fiber-coupled diode laser pumping. The same LMA fiber demonstrates 33% optical-to-optical efficiency (46% slope efficiency versus absorbed power) when cladding-pumped with 1520-1530-nm fiber-coupled laser diode modules. Detailed analysis of these experiments is presented.

Paper Details

Date Published: 28 April 2008
PDF: 10 pages
Proc. SPIE 6952, Laser Source Technology for Defense and Security IV, 695205 (28 April 2008); doi: 10.1117/12.782760
Show Author Affiliations
M. Dubinskii, Army Research Lab. (United States)
V. Ter-Mikirtychev, NovaWave Technologies, Inc. (United States)
J. Zhang, Army Research Lab. (United States)
I. Kudryashov, Princeton Lightwave Inc. (United States)

Published in SPIE Proceedings Vol. 6952:
Laser Source Technology for Defense and Security IV
Mark Dubinskii; Gary L. Wood, Editor(s)

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