Half-mJ all-fiber-based single-frequency nanosecond pulsed fiber laser at 2-μm

Qiang Fang, Wei Shi, Eliot Petersen, Khanh Kieu, Arturo Chavez-Pirson, Nasser Peyghambarian

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We report a high energy, high peak power, all-fiber-based single-frequency ∼15-ns pulsed laser source at ∼1918.4 nm in master oscillator-power amplifier configuration. The pulsed fiber laser seed was achieved by directly modulating a continuouswave single-frequency fiber laser using an electro-optic modulator driven by an arbitrary waveform generator to pre-shape the pulses before amplification to mitigate pulse steepening and dynamic gain saturation. One piece of large (25-μm) core, polarization-maintaining highly thulium-doped germanate glass fiber was used in the power amplifier stage to boost the energy and the peak power of the 15-ns pulses to >0.5 mJ and >33 kW without any nonlinearities.

Original languageEnglish (US)
Article number6111443
Pages (from-to)353-355
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number5
StatePublished - 2012


  • 2-μm nanosecond pulses
  • Fiber amplifier
  • Single-frequency lasers

ASJC Scopus subject areas

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


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