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dc.contributor.authorFang, Qiang
dc.contributor.authorLi, Jinhui
dc.contributor.authorShi, Wei
dc.contributor.authorQin, Yuguo
dc.contributor.authorXu, Yang
dc.contributor.authorMeng, Xiangjie
dc.contributor.authorNorwood, Robert A.
dc.contributor.authorPeyghambarian, Nasser
dc.date.accessioned2017-11-16T21:44:53Z
dc.date.available2017-11-16T21:44:53Z
dc.date.issued2017-10
dc.identifier.citation5 kW Near-Diffraction-Limited and 8 kW High-Brightness Monolithic Continuous Wave Fiber Lasers Directly Pumped by Laser Diodes 2017, 9 (5):1 IEEE Photonics Journalen
dc.identifier.issn1943-0655
dc.identifier.doi10.1109/JPHOT.2017.2744803
dc.identifier.urihttp://hdl.handle.net/10150/626077
dc.description.abstractTandem pumping technique are traditionally adopted to develop > 3-kW continuous-wave (cw) Yb3+-doped fiber lasers, which are usually pumped by other fiber lasers at shorter wavelengths (1018 nm e.g.). Fiber lasers directly pumped by laser diodes have higher wall-plug efficiency and are more compact. Here we report two high brightness monolithic cw fiber laser sources at 1080 nm. Both lasers consist of a cw fiber laser oscillator and one laser-diode pumped double cladding fiber amplifier in the master oscillator-power amplifier configuration. One laser, using 30-mu m-core Yb3+-doped fiber as the gain medium, can produce > 5-kW average laser power with near diffraction-limited beam quality (M-2<1.8). The slope efficiency of the fiber amplifier with respect to the launched pump power reached 86.5%. The other laser utilized 50-mu m-core Yb3+-doped fiber as the gain medium and produced > 8-kW average laser power with high beam quality (M-2: similar to 4). The slope efficiency of the fiber amplifier with respect to the launched pump power reach 83%. To the best of our knowledge, this is the first detailed report for > 5-kW near-diffraction-limited and > 8-kW high-brightness monolithic fiber lasers directly pumped by laser diodes.
dc.description.sponsorshipNational High Technology Research and Development Program [2014AA041901]; Shandong Province Independent Innovation and Achievement Transformation Project [2014ZZCX04212]; Science and Technology Support Program of Tianjin [15ZCZDGX00970]; National Natural Science Foundation of China [61335013, 61275102]; Natural Science Foundation of Shandong [ZR2014FP015]en
dc.language.isoenen
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen
dc.relation.urlhttp://ieeexplore.ieee.org/document/8025378/en
dc.rights© 2017 IEEEen
dc.subjectDiode-pumped lasersen
dc.subjectfiber lasersen
dc.subjecthigh poweren
dc.subjectnear-diffraction-limiteden
dc.subjectytterbium-dopeden
dc.title5 kW Near-Diffraction-Limited and 8 kW High-Brightness Monolithic Continuous Wave Fiber Lasers Directly Pumped by Laser Diodesen
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Coll Opt Scien
dc.identifier.journalIEEE Photonics Journalen
dc.description.noteOpen access journal.en
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal published versionen
refterms.dateFOA2018-06-04T13:58:08Z
html.description.abstractTandem pumping technique are traditionally adopted to develop > 3-kW continuous-wave (cw) Yb3+-doped fiber lasers, which are usually pumped by other fiber lasers at shorter wavelengths (1018 nm e.g.). Fiber lasers directly pumped by laser diodes have higher wall-plug efficiency and are more compact. Here we report two high brightness monolithic cw fiber laser sources at 1080 nm. Both lasers consist of a cw fiber laser oscillator and one laser-diode pumped double cladding fiber amplifier in the master oscillator-power amplifier configuration. One laser, using 30-mu m-core Yb3+-doped fiber as the gain medium, can produce > 5-kW average laser power with near diffraction-limited beam quality (M-2<1.8). The slope efficiency of the fiber amplifier with respect to the launched pump power reached 86.5%. The other laser utilized 50-mu m-core Yb3+-doped fiber as the gain medium and produced > 8-kW average laser power with high beam quality (M-2: similar to 4). The slope efficiency of the fiber amplifier with respect to the launched pump power reach 83%. To the best of our knowledge, this is the first detailed report for > 5-kW near-diffraction-limited and > 8-kW high-brightness monolithic fiber lasers directly pumped by laser diodes.


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