By using a PbS-doped phosphate glass as an intracavity saturable absorber, we achieved passive <i>Q</i> switching of a 1.54-μm Er:Yb:glass laser. We obtained <i>Q</i>-switched pulses with 110-ns duration and 0.2-mJ energy. The saturation intensity at 1.54 μm was estimated to be ~60 kW/cm<sup>2</sup>.
© 2000 Optical Society of America
Alexander M. Malyarevich, Igor A. Denisov, Vasily G. Savitsky, Konstantin V. Yumashev, and Andrey A. Lipovskii, "Glass Doped with PbS Quantum Dots for Passive Q Switching of a 1.54- νm Laser," Appl. Opt. 39, 4345-4347 (2000)