Step-index high-absorption Yb-doped large-mode-area fiber with Ge-doped raised cladding
Optics Letters, ISSN: 1539-4794, Vol: 43, Issue: 23, Page: 5897-5900
2018
- 22Citations
- 10Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations22
- Citation Indexes22
- 22
- CrossRef19
- Captures10
- Readers10
- 10
Article Description
We report an all-solid large-mode-area (LMA) step-index fiber offering high absorption and low core numerical aperture (NA) by introducing a highly ytterbium-doped P:Al core and germanium-doped cladding. The fiber provides core absorption of ∼1200 dB∕m at 976 nm with a low 0.07 core NA, due to the raised Ge cladding. Furthermore, matched profiles of P and Al across the core are successfully obtained with high concentration of YbO around 0.4 mol%. The fiber characteristics are routinely achievable by conventional modified chemical vapor deposition with a solution doping technique. A highly efficient laser with >100 W output power, 86% slope efficiency with respect to launched pump power, and a mean M of 1.34 has been demonstrated using the fabricated LMA step-index fiber. We also report 80% laser slope efficiency with 58 W output power (pump power limited) within only 0.5 m of the fiber when pumped by a wavelength-stabilized laser diode.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85057490619&origin=inward; http://dx.doi.org/10.1364/ol.43.005897; http://www.ncbi.nlm.nih.gov/pubmed/30499969; https://opg.optica.org/abstract.cfm?URI=ol-43-23-5897; https://dx.doi.org/10.1364/ol.43.005897; https://opg.optica.org/ol/abstract.cfm?uri=ol-43-23-5897
Optica Publishing Group
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