Single-frequency and mode-locked Er/Yb co-doped waveguide lasers

Rare-earth-doped waveguide lasers have seen a significant increase in commercial and research interest over the last decade both in single-frequency and pulsed laser designs. This is due primarily to the higher doping concentrations of active ions in rare-earth-doped bulk glasses relative to rare-earth-doped fiber devices. Higher dopant concentrations allow for laser operation at decreased cavity length, which improves mode stability. We present results using Er,Yb co-doped waveguides in cw narrow-linewidth and mode-locked lasers.