It is shown for the f irst time to our knowledge that short-pulse amplif ication in high-power erbium-doped fiber amplifiers, simultaneously accompanied by stimulated Raman scattering, generates a broadband optical spectrum at high output power (270 mW). At 20 dB down from the peak the continuum extended over 329 nm, from 1427 to 1756 nm. The FWHM bandwidth was 125 nm, centered at 1650 nm. The coherence was measured to be 15 fringes, which corresponds to a 25-µm coherence length.
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics