Passively Q-switched fiber laser that uses saturable Raman gain

Yucheng Zhao, Stuart D. Jackson

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


Operation of a short all-fiber passively Q-switched Raman laser pumped by a continuous-wave laser diode is experimentally demonstrated. The passively switched fiber laser consists simply of a double-clad ytterbiumdoped silica fiber that is spliced directly to a moderately germanium-doped silica fiber. The placement of the Ge-doped silica fiber within the fundamental (Raman pump) cavity allows interplay between fundamental and Stokes fields to take place, which leads to saturation of the Raman gain as a result of pump depletion. Pulse widths of 70 and 60 ns at the first and second Stokes wavelengths of 1168 and 1232 nm, respectively, are produced at a stable 588 kHz repetition rate.

Original languageEnglish
Pages (from-to)751-753
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2006
Externally publishedYes


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