Raman-converter-diode-pumped continuous-wave femtosecond Er-doped fibre laser

An Er-doped fibre laser pumped at 1480 nm by a Raman converter of radiation from a diode-pumped ytterbium-doped fibre laser is built and investigated. The laser can operate in the soliton and stretched pulse regimes. The laser emits 1550-nm, <100-fs pulses with a pulse repetition rate of 25 MHz and has an average power of 10 mW.