Nd:YAG laser pumped picosecond Yb3+/Er3+ fibre laser
A 1064 nm pumped Yb3+/Er3+ fibre laser, actively modelocked using a selfresonant Raman-Nath modulator is described. With 300 mW of pump power the laser produces 1.7ps pulses with peak powers as high as 200 W at a repetition rate of 82 MHz. Overall pump/signal transfer efficiencies greater than 30% have been obtained.