3 mJ all-fiber MOPA with a short-length highly Er3+-doped phosphate fiber

Joshua Olson, Xiushan Zhu, R. Dawson Baker, Kort Wiersma, Michael Li, Jie Zong, Arturo Chavez-Pirson, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A very large mode-area 2 wt% erbium-doped double-clad phosphate fiber with a core diameter of 60 μm 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.

Original languageEnglish (US)
Article number9249014
Pages (from-to)1481-1484
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number23
StatePublished - Dec 1 2020


  • Erbium-doped fiber amplifiers
  • Optical fibers
  • Optical pulses

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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