title: Mode-locked 0.5 μJ fiber laser at 976 nm.
abstract: We report on high-energy femtosecond pulse generation from an ytterbium-doped rod-type fiber oscillator emitting around 976 nm. Self-starting and stable single-pulse operation are demonstrated with 4.2 W of average output power at a repetition rate of 8.4 MHz. The resulting energy level reaches 0.5 μJ. Because of the all-normal dispersion of the laser cavity, output pulses are naturally chirped with a duration of 14 ps. External compression using diffraction gratings shortens the pulse duration down to 460 fs.
authors.affiliation: Centre Lasers Intenses et Applications, Université de Bordeaux–CNRS–CEA, UMR 5107, 351 Cours de la Libération F-33405 Talence, France. lhermite@celia.u‐bordeaux1.fr
authors.forename: J
authors.initials: J
authors.lastname: Lhermite
authors.forename: C
authors.initials: C
authors.lastname: Lecaplain
authors.forename: G
authors.initials: G
authors.lastname: Machinet
authors.forename: R
authors.initials: R
authors.lastname: Royon
authors.forename: A
authors.initials: A
authors.lastname: Hideur
authors.forename: E
authors.initials: E
authors.lastname: Cormier