X. Dong, X. Li, H. Xiao, X. Wang, and P. Zhou*
College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073, China
*e-mail: Zhoupu203@163.com
Received November 24, 2011; in final form, December 1, 2011; published online April 3, 2012
Abstract—We presented the first demonstration of a special S-band Yb-doped fiber laser with a central wave-
length of 1012 nm. By pumping common alumosilicate fiber doped with 974 nm laser diode, efficient lasing at
1012 nm was achieved with a maximal output power of 331 mW and 55% power conversion efficiency. We also
built a fiber amplifier to validate the feasibility of the 1012 nm laser as the tandem pump source by boosting the
1064 nm C-band laser power up. The slope efficiency of the tandem-pumped fiber amplifier is 63%.
DOI: 10.1134/S1054660X12050052
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