title: Green, orange, and red Pr(3+)∶YLiF(4) epitaxial waveguide lasers.
abstract: Efficient guided laser oscillation in the visible spectral region is demonstrated with praseodymium-doped YLiF(4) layers grown by liquid phase epitaxy. By exciting Pr(3+) ions at 479.2 nm with an optically pumped semiconductor laser, maximum slope efficiencies of 40% at 639 nm and 32% at 604 nm are obtained in a cw regime. Green laser oscillation at 522.5 nm, in a quasi-cw regime, with an average output power of 66 mW, is demonstrated for the first time, to our knowledge, in a crystalline fluoride epitaxial waveguide. Furthermore, a record efficiency of 60% at 639 nm in the quasi-cw regime is reported.
authors: Western
authors: W
authors: Bolaños
authors: Gurvan
authors: G
authors: Brasse
authors: Florent
authors: F
authors: Starecki
authors: Alain
authors: A
authors: Braud
authors: Jean-Louis
authors: JL
authors: Doualan
authors: Richard
authors: R
authors: Moncorgé
authors: Patrice
authors: P
authors: Camy