High-energy, high-power ytterbium-doped Q-switched fiber laser

J. A. Alvarez-Chavez*, H. L. Offerhaus, J. Nilsson, P. W. Turner, W. A. Clarkson, D. J. Richardson

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

190 Citations (Scopus)


We report on a Q-switched, cladding-pumped, ytterbium-doped large-mode-area fiber laser operating at 1090 nm that is capable of generating 2.3 mJ of output pulse energy at a 500-Hz repetition rate and more than 5 W of average output power at higher repetition rates in a high-brightness beam (M2 = 3). Using a similar fiber with a smaller core, we generated >0.5-mJ pulses in a diffraction-limited beam. Our results represent a threefold increase in pulse energy over previously published values for Q-switched fiber lasers and firmly establish fiber lasers as compact, multiwatt, multimillijoule pulse sources with large scope for both industrial and scientific applications.

Original languageEnglish
Pages (from-to)37-39
Number of pages3
JournalOptics letters
Issue number1
Publication statusPublished - 1 Jan 2000
Externally publishedYes


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