Using a Q-switched Er+3-Yb+3 co-doped glass waveguide laser, the autho
rs have obtained 67 W peak power and 200 ns wide optical pulses with a
pulse energy of 13.4 mu J for a 7 m long cavity at a 1 kHz repetition
rate. The dependence of the pulsewidth on the cavity length has also
been investigated, and indicated that integration of this laser in a 1
0 cm long cavity would provide 2 ns wide optical pulses with 7 kW peak
power.