Abstract
An Yb–Er co-doped phosphate glass double-clad fiber with hexagonal inner cladding was fabricated by stack-and-draw method. Output power of 4.9 W was extracted with slope efficiency of 30 % from the fiber with 55 cm in length.
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The National Nature Science Foundation of China (51272262 and 61405215).
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Wen, L., Wang, L., He, D. et al. Yb–Er co-doped phosphate fiber with hexagonal inner cladding. Appl. Phys. B 122, 68 (2016). https://doi.org/10.1007/s00340-016-6339-6
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DOI: https://doi.org/10.1007/s00340-016-6339-6