Highly efficient cladding-pumped single-mode three-level Yb all-solid photonic bandgap fiber lasers
Optics Letters, ISSN: 1539-4794, Vol: 44, Issue: 4, Page: 807-810
2019
- 37Citations
- 17Captures
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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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Article Description
Efficient cladding-pumped three-level Yb fiber lasers are difficult to achieve due to the competing four-level system and necessary high inversions. We demonstrate an efficiency of ∼62.7% versus a coupled pump, a record for cladding-pumped fiber lasers with a single-pass pump. 84 W at ∼978 nm with ∼1.12M was achieved, a record power for flexible fibers. Amplified spontaneous emission was suppressed by >40 dB. The efficiency is quantum-limited ∼94% versus an absorbed pump. This is made possible by the use of a photo-darkening-free Yb phosphosilicate core and recent progress in single-mode large-core all-solid photonic bandgap fiber designs, which provide the necessary large core-to-cladding ratio and suppression of the four-level system.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85061548532&origin=inward; http://dx.doi.org/10.1364/ol.44.000807; http://www.ncbi.nlm.nih.gov/pubmed/30767992; https://opg.optica.org/abstract.cfm?URI=ol-44-4-807; https://dx.doi.org/10.1364/ol.44.000807; https://opg.optica.org/ol/abstract.cfm?uri=ol-44-4-807
Optica Publishing Group
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