Extractable energy from ytterbium-doped high-energy pulsed fiber amplifiers and lasers

Yoav Sintov*, Ori Katz, Yaakov Glick, Shai Acco, Yehuda Nafcha, Avraham Englander, Raphael Lavi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


An analytic model is developed to evaluate the extractable energy from high-energy pulsed ytterbium-doped fiber amplifiers and lasers. The energy extraction capabilities under the limitation of spurious lasing, due to amplified spontaneous emission, are mapped for various numerical apertures, single- and multitransverse-mode evolution, and operating wavelengths. The calculation results of the analytic model show a good match with experimental results carried out for various double-clad fiber amplifiers. The model provides an accurate assessment for the maximum pulse energy that can be extracted from a given ytterbium-doped fiber. In addition, for a specific pump power, the model can be used to determine the minimum repetition rate and optimal length, under which the laser source can be operated before spurious lasing occurs.

Original languageAmerican English
Pages (from-to)218-230
Number of pages13
JournalJournal of the Optical Society of America B: Optical Physics
Issue number2
StatePublished - Feb 2006
Externally publishedYes


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