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Thulium-doped silica fibers with enhanced 3H4 level lifetime for fiber lasers and amplifiers

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Academic year: 2021

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Figure 2. a) Histogram of the recovered amplitude distributions obtained  for silica-based Tm 3+ -doped fibers
Figure 4. Typical layout of the TDFA.
Figure 6. Optimization of the waveguide parameters, namely the NA and  core radius (a) and optimization of the pump wavelength (b)
Figure 7. Fiber laser setup in compact all-fiber arrangement (a), single  wavelength up-conversion pumping scheme (b), effect of the host material  (c)

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