2.7-μm Er3+:Y2O3 ceramics laser in CW and Fe2+.ZnSe passively Q-switched modes

Laser operation of the Er3+:Y 2 O 3 ceramics pumped by 976 nm laser diode in CW and passively Q-switched modes was studied. The CW laser power at 2.7 μm reached 1.2 W at 8°C temperature. The passively Q-switched operation in kHz repetitively-pulsed mode was obtained by a polycrystalline Fe2+:ZnSe saturable absorber.