A ytterbium-doped, glass, channel waveguide laser, fabricated by ion exchange, is reported. The 2.2-cm long device, using broad-band 4% output couplers, 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 fluorescence lifetimes, emission and absorption cross sections, propagation losses, and mode profiles were experimentally determined and laser performance was analytically modeled using this data.
Catalin Florea and Kim A. Winick, "Ytterbium-Doped Glass Waveguide Laser Fabricated by Ion Exchange," J. Lightwave Technol. 17, 1593- (1999)