title: 1.5 GHz picosecond pulse generation from a monolithic waveguide laser with a graphene-film saturable output coupler.
abstract: We fabricate a saturable absorber mirror by coating a graphene- film on an output coupler mirror. This is then used to obtain Q-switched mode-locking from a diode-pumped linear cavity channel waveguide laser inscribed in Ytterbium-doped Bismuthate Glass. The laser produces 1.06 ps pulses at ~1039 nm, with a 1.5 GHz repetition rate, 48% slope efficiency and 202 mW average output power. This performance is due to the combination of the graphene saturable absorber and the high quality optical waveguides in the laser glass.
authors.affiliation: SUPA, Institute of Photonics and Quantum Sciences, School of Engineering and Physical Sciences, Heriot-Watt University, EH14 4AS, UK. rm330@hw.ac.uk
authors.forename: Rose
authors.initials: R
authors.lastname: Mary
authors.forename: Graeme
authors.initials: G
authors.lastname: Brown
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Beecher
authors.forename: Felice
authors.initials: F
authors.lastname: Torrisi
authors.forename: Silvia
authors.initials: S
authors.lastname: Milana
authors.forename: Daniel
authors.initials: D
authors.lastname: Popa
authors.forename: Tawfique
authors.initials: T
authors.lastname: Hasan
authors.forename: Zhipei
authors.initials: Z
authors.lastname: Sun
authors.forename: Elefterios
authors.initials: E
authors.lastname: Lidorikis
authors.forename: Seiki
authors.initials: S
authors.lastname: Ohara
authors.forename: Andrea C
authors.initials: AC
authors.lastname: Ferrari
authors.forename: Ajoy K
authors.initials: AK
authors.lastname: Kar
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D007834:Lasers; D007909:Lenses; D008567:Membranes, Artificial; D020349:Surface Plasmon Resonance / Q000295:instrumentation*
chemical_list: D008567:Membranes, Artificial; D006108:Graphite