High Power Laser Science and Engineering, 2013, 1 (3-4): 3-43-4000123, Published Online: Nov. 19, 2018  

51.5 W monolithic single frequency 1.97 μm Tm-doped fiber amplifier

Author Affiliations
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China
Abstract
We demonstrate a monolithic single frequency Tm-doped fiber amplifier with output power of 51.5 W. A single frequency fiber laser at 1.97 $\mathrm {\mu} $m is amplified by a cascaded master oscillator power amplifier (MOPA) system with all-fiber configuration. The optical-to-optical conversion efficiency of the main fiber amplifier is 45%. No amplified spontaneous emission (ASE) or stimulated Brillouin scattering (SBS) effect is observed in the fiber amplifier. The output power could be further scaled by launching more pump power.

Xiong Wang, Pu Zhou, Xiaolin Wang, Hu Xiao, Lei Si. 51.5 W monolithic single frequency 1.97 μm Tm-doped fiber amplifier[J]. High Power Laser Science and Engineering, 2013, 1(3-4): 3-43-4000123.

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