Pulse generation without gain-bandwidth limitation in a laser with self-similar evolution

A. Chong*, H. Liu, B. Nie, B.G. Bale, S. Wabnitz, W.H. Renninger, M. Dantus, F.W. Wise

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

With existing techniques for mode-locking, the bandwidth of ultrashort pulses from a laser is determined primarily by the spectrum of the gain medium. Lasers with self-similar evolution of the pulse in the gain medium can tolerate strong spectral breathing, which is stabilized by nonlinear attraction to the parabolic self-similar pulse. Here we show that this property can be exploited in a fiber laser to eliminate the gain-bandwidth limitation to the pulse duration. Broad (∼200 nm) spectra are generated through passive nonlinear propagation in a normal-dispersion laser, and these can be dechirped to ∼20-fs duration.

Original languageEnglish
Pages (from-to)14213-14220
Number of pages8
JournalOptics Express
Volume20
Issue number13
Early online date11 Jun 2012
DOIs
Publication statusPublished - 18 Jun 2012

Keywords

  • ultrafast lasers
  • pulse shaping
  • fiber optics
  • amplifiers
  • oscillators

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    Chong, A., Liu, H., Nie, B., Bale, B. G., Wabnitz, S., Renninger, W. H., Dantus, M., & Wise, F. W. (2012). Pulse generation without gain-bandwidth limitation in a laser with self-similar evolution. Optics Express, 20(13), 14213-14220. https://doi.org/10.1364/OE.20.014213