3 mJ All-Fiber MOPA With a Short-Length Highly Er3+-Doped Phosphate Fiber
Baker, R. Dawson
AffiliationThe College of Optical Sciences, The University of Arizona
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CitationOlson, J., Zhu, X., Baker, R. D., Wiersma, K., Li, M., Zong, J., ... & Peyghambarian, N. (2020). 3 mJ All-Fiber MOPA With a Short-Length Highly Er 3+-Doped Phosphate Fiber. IEEE Photonics Technology Letters, 32(23), 1481-1484.
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AbstractA very large mode-area 2 wt% erbium-doped double-clad phosphate fiber with a core diameter of 60 mu m and core numerical aperture of 0.03 was fabricated and used for the last stage amplifier of an all-fiber pulsed laser master-oscillator power amplifier (MOPA) at 1550 nm. The Er3+ double-clad phosphate fiber has a cladding-core ratio of 2.17 and a V number of 3.6 at 1550 nm. 3 mJ pulses with 21.5 ns duration were obtained with Gaussian-like spatial beam profile with only a 75 cm long phosphate gain fiber.
VersionFinal accepted manuscript
SponsorsUniversity of Arizona