title: 70% slope efficiency from an ultrafast laser-written Nd:GdVO4 channel waveguide laser.
abstract: We report high efficiency continuous wave laser oscillations at 1063.6 nm from an ultrafast laser written Nd(3+):GdVO4 channel waveguide under the 808 nm optical excitation. A record 17 mm·s(-1) writing speed was used while the low propagation loss of the waveguide (~0.5 dB·cm(-1)) enabled laser performance with a threshold pump power as low as 52 mW and a near to quantum defect limited laser slope efficiency of 70%.
authors.affiliation: School of Physics, Shandong University, Jinan 250100, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Tan
authors.forename: Airan
authors.initials: A
authors.lastname: Rodenas
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Robert R
authors.initials: RR
authors.lastname: Thomson
authors.forename: Ajoy K
authors.initials: AK
authors.lastname: Kar
authors.forename: Daniel
authors.initials: D
authors.lastname: Jaque
authors.forename: Qingming
authors.initials: Q
authors.lastname: Lu