title: 1.86 W cw single-frequency 1319 nm ring laser pumped at 885 nm.
abstract: A 1.86 W cw single-frequency 1319 nm laser was produced by using an 885 nm-pumped Nd:YAG crystal with a compact four-mirror ring cavity, for the first time to our knowledge. The Nd:YAG produced a slope efficiency of 21% and an optical-to-optical efficiency of 18% with respect to the absorbed diode pump power. A near-diffraction-limited beam with M(2)=1.2 was achieved under the maximum output power.
authors.affiliation: Laboratory of All-Solid-State Light Sources, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083, China.
authors.forename: M L
authors.initials: ML
authors.lastname: Li
authors.forename: W F
authors.initials: WF
authors.lastname: Zhao
authors.forename: S B
authors.initials: SB
authors.lastname: Zhang
authors.forename: L
authors.initials: L
authors.lastname: Guo
authors.forename: W
authors.initials: W
authors.lastname: Hou
authors.forename: J M
authors.initials: JM
authors.lastname: Li
authors.forename: X C
authors.initials: XC
authors.lastname: Lin