Highly-efficient, low-noise grating-feedback Er/sup 3+/:Yb/sup 3+/ codoped fibre laser

摘要

The authors report a highly-efficient, short, robustly single-frequency and linearly polarised Er/sup 3+/:Yb/sup 3+/ codoped fibre laser with fibre-grating Bragg reflectors. An output power of 19 mW for 100 mW of 980 nm diode pump power and a slope efficiency relative to a launched pump power of 55% is demonstrated. The RIN of the laser was >-157 dB/Hz and the laser linewidth was 300 kHz.