Power scaling of the in-band diode-pumped Er-nanoparticle-doped fiber laser (Conference Presentation)

Jun Zhang; Radha K. Pattnaik; Mark Dubinskii; Colin C. Baker; E. Joseph Friebele; Ashley A. Burdett; Woohong Kim; Jasbinder S. Sanghera

doi:10.1117/12.2296922

14 March 2018 Power scaling of the in-band diode-pumped Er-nanoparticle-doped fiber laser (Conference Presentation)

Jun Zhang, Radha K. Pattnaik, Mark Dubinskii, Colin C. Baker, E. Joseph Friebele, Ashley A. Burdett, Woohong Kim, Jasbinder S. Sanghera

Author Affiliations +

Proceedings Volume 10528, Optical Components and Materials XV; 1052803 (2018) https://doi.org/10.1117/12.2296922
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Successful power scaling of the Er-doped fiber laser heavily depends on Er dopant concentration. In order to scale the power up to a kW class, core absorption should be well over the limits defined by current commercial doping techniques. Recently developed nanoparticle (NP) doping technique of fabrication of erbium-doped fibers allows the desired dopant concentration increases while mitigating both Er upconversion and clustering effects. Here we present the latest resonantly-pumped Er fiber laser power scaling results enabled by further development of the NP doping technique of Er-doped fiber fabrication. Using resonantly cladding-pumped (at 1530 nm) large mode area 20/125 µm fiber with the Er-NP-doped core we achieved pump-limited CW power of over 30 W at ~1605 nm with the slope efficiency versus absorbed pump power of ~63%. These are, to the best of our knowledge, the highest power and efficiency demonstrated so far for from the Er-NP-doped fiber. Further considerations on fiber design optimization are presented as well.

Conference Presentation

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Jun Zhang, Radha K. Pattnaik, Mark Dubinskii, Colin C. Baker, E. Joseph Friebele, Ashley A. Burdett, Woohong Kim, and Jasbinder S. Sanghera "Power scaling of the in-band diode-pumped Er-nanoparticle-doped fiber laser (Conference Presentation)", Proc. SPIE 10528, Optical Components and Materials XV, 1052803 (14 March 2018); https://doi.org/10.1117/12.2296922

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KEYWORDS

Fiber lasers

Doping

Erbium

Nanoparticles

Fabrication

Absorption

Upconversion

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