Ho-doped fiber for high energy laser applications

Friebele, E. J.; Askins, Charles G.; Peele, John R.; Wright, Barbara M.; Condon, Nicholas J.; O’Connor, Shawn; Brown, Christopher; Bowman, S. R.

doi:10.1117/12.2041577

Cited by 22 publications

(19 citation statements)

References 5 publications

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“…Measurements on both Ho 3+ solution doped and the Ho:LaF 3 NP preforms indicate that there is a small increase of up to 33% in lifetime with NP doping. However, these improved lifetime values are still far lower than those predicted based on Judd-Ofelt analysis [14]. The LaF 3 disassociates and reacts with the silica as described above and in Ref.…”

Section: Nanoparticle Doping With Holmiummentioning

confidence: 58%

Nanoparticle doping for high power fiber lasers at eye-safer wavelengths

et al. 2017

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Abstract:A nanoparticle (NP) doping technique was developed for fabricating erbium (Er)-and holmium (Ho)-doped silica-based optical fibers for high energy lasers. Slope efficiencies in excess of 74% were realized for Er NP doping in a single mode fiber based master oscillator power amplifier (MOPA) and 53% with multi-Watt-level output in a resonantly cladding-pumped power oscillator laser configuration based on a double-clad fiber. Cores comprising Ho doped LaF 3 and Lu 2 O 3 nanoparticles exhibited slope efficiencies as high as 85% at 2.09 µm in a laser configuration. To the best of the authors' knowledge, this is the first report of a holmium nanoparticle doped fiber laser as well as the highest efficiency and power output reported from an erbium nanoparticle doped fiber laser.

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Section: Nanoparticle Doping With Holmiummentioning

confidence: 58%

Nanoparticle doping for high power fiber lasers at eye-safer wavelengths

et al. 2017

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“…In this configuration the maximum slope efficiency was 49.7 % with a 770 mW threshold for an 8.75 m resonator length. This efficiency is below the record efficiency of 62 % achieved in a 4 m double-clad holmium fiber laser by reducing OH concentration [25]. The reduction in efficiency is due to increased absorption of the lasing emission from the intrinsic silica multiphonon absorption edge, higher OH-concentration and longer cavity length.…”

Section: Fiber Characterizationmentioning

confidence: 60%

Air-Clad Holmium-Doped Silica Fiber Laser

Lancaster

Monro

et al. 2016

IEEE J. Quantum Electron.

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“…Solution doping is normally used in order to incorporate rare-earth dopants into multi-component silica based hosts and provides another avenue for the incorporation of OH À . Recently an atmospheric exclusion technique applied to the in-situ solution doping of holmium has resulted in OH À levels of $0.13 ppm reducing the losses due to the presence of OH -well below that of the background IR losses of silica [20]. Fig.…”

Section: Holmium-doped Silica Spectroscopy In the Near-irmentioning

confidence: 99%