Ytterbium-doped glass waveguide laser fabricated by ion exchange

A ytterbium-doped, glass, channel waveguide laser, fabricated by ion exchan ge, is reported. The 2.2-cm long device, using broad-band 4% output coupler s, lased in the vicinity from 1020 to 1030 nm when pumped by a Ti:sapphire laser operating at 910 nm. A lasing threshold of 50 mW (launched pump) and a slope efficiency of 5% were measured. Device parameters, including fluore scence lifetimes, emission and absorption cross sections, propagation losse s, and mode profiles were experimentally determined and laser performance w as analytically modeled using this data.