Ultrashort-pulse high-power Yb3+-doped fiber amplifiers

Eldad Yahel, Ortwin Hess, Amos A. Hardy

Research output: Contribution to journalArticlepeer-review


Ultrashort optical pulse propagation in high-power Yb3+-doped fiber amplifiers (YDFA) is studied using a spectrally resolved nonlinear power equation for the coupled pulse components. The Yb3+ ions transitions are modeled using a rate equation. Examples for high-power YDFAs with normal dispersion show good qualitative agreement with experimental results. We analyze the effects of the incident pulse wavelength, pulse peak power, Yb3+ concentration, pump filling factor, fiber length, pumping configuration, pump power and nonlinear index, on the intensity distribution of short amplified pulses. We also demonstrate the spectral compression of an initially negative-chirped pulse.

Original languageEnglish
Pages (from-to)824-832
Number of pages9
JournalIEEE Journal of Quantum Electronics
Issue number9
StatePublished - Sep 2007


  • Optical fiber amplifiers
  • Optical fiber dispersion
  • Optical fiber theory
  • Optical pulse amplifiers
  • Ytterbium (yb)


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