Ultra-wide-tunable fibre source of femto- and picosecond pulses based on intracavity Raman conversion

Abstract

This report for the first time presents the results of experimental investigations into femto- and picosecond all-positive dispersion wavelength-tuneable Yb-doped fibre laser with efficient intra-cavity and extra-cavity Raman conversion of radiation in the range of 1070-1300 nm. We demonstrate smooth spectral detuning of radiation Stokes components within ranges 1130-1174, 1190-1235, and 1255-1300 nm generated when the fundamental harmonic of the laser was tuned within the 1075-1120-nm range. The average output power of the laser radiation at different Stokes components reached up to 250 mW.