Affiliation:
1. Xi’an Institute of Optics and Precision Mechanics
2. University of Chinese Academy of Sciences
3. Harbin Engineering University
4. Harbin Institute of Technology
Abstract
We investigate the power scaling and thermal management of multi-point side-pumped 2.825 µm heavily-erbium-doped fluoride fiber lasers by numerical simulation. The 4-point (or 6-point) erbium-doped fluoride fiber laser with polished erbium-doped fluoride fiber-based side-pump couplers delivers an output laser power of over 100 W at each launched 981 nm pump power of 100 W (or 75 W). Meanwhile, the core temperature increases of the gain fiber tips are below 1 K, making it possible for a highly reflective fiber Bragg grating to work stably in high-power operation. Once the preparation processes of these erbium-doped fluoride fiber-based side-pump couplers and endcaps with effective coatings are mature, the proposed multi-point side-pumped erbium-doped fluoride fiber lasers with some feasibility may theoretically pave the way for the development of hundred-watt mid-infrared fiber lasers with effective thermal management.
Funder
National Natural Science Foundation of China
Natural Science Foundation of Shaanxi Province
China Postdoctoral Science Foundation
Xi'an Institute of Optics and Precision Machinery
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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