Low-birefringence 120 W Yb fiber amplifier producing linearly polarized pulses with 69-GHz linewidth at 1083 nm
Z Huang, S Pidishety, TW Hawkins, Y Feng… - Advanced Solid State …, 2018 - opg.optica.org
Advanced Solid State Lasers, 2018•opg.optica.org
… In conclusion, a high-power narrow-linewidth linearly-polarized nanosecond fiber
amplifier is reported. The highconcentration, 0.028 NA 40/400 μm LMA fiber is key to both
mitigating optical nonlinearities and maintaining high beam quality at a wavelength of 1083
nm. The fiber is also able to maintain a high degree of linear polarization over a distance as
large as 5 m, despite its low birefringence. …
amplifier is reported. The highconcentration, 0.028 NA 40/400 μm LMA fiber is key to both
mitigating optical nonlinearities and maintaining high beam quality at a wavelength of 1083
nm. The fiber is also able to maintain a high degree of linear polarization over a distance as
large as 5 m, despite its low birefringence. …
Abstract
A low-birefringence 5-m-long fiber amplifier with a highly Yb-doped 40-μm, 0.028-NA phosphosilicate core produces linearly polarized (7.2-dB PER) 20-ns, 0.8-mJ pulses with 69-GHz linewidth, M 2= 1.2, and 120 W of average output power at 1083 nm.
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