Generation of double-scale femto/pico-second optical lumps in mode-locked fiber lasers

Sergey Kobtsev*, Sergey Kukarin, Sergey Smirnov, Sergey Turitsyn, Anton Latkin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We observed generation of stable picoseconds pulse train and double-scale optical lumps with picosecond envelope and femtosecond noise-like oscillations in the same Yb-doped fiber laser with all-positivedispersion cavity mode-locked due to the effect of non-linear polarization evolution. In the noise-like pulse generation regime the auto-correlation function has a non-usual double (femto- and picosecond) scale shape. We discuss mechanisms of laser switching between two operation regimes and demonstrate a good qualitative agreement between experimental results and numerical modeling based on modified nonlinear Schrödinger equations.

Original languageEnglish
Pages (from-to)20707-20713
Number of pages7
JournalOptics Express
Issue number23
Publication statusPublished - 1 Jan 2009

Bibliographical note

©2009 Optical Society of America


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