Low threshold Nd-doped silica planar waveguide laser

The authors report high power, high slope efficiency, Nd-doped glass waveguide lasers on Si, fabricated by flame hydrolysis deposition (FHD) and reactive ion etching (RIE). The laser was pumped at 804 nm and achieved a lasing threshold of 20 mW, slope efficiencies of 2.6 % and output powers of over 1 mW.