title: Ultralow quantum-defect eye-safe Er:Sc2O3 laser.
abstract: Resonantly pumped Er(3+):Sc(2)O(3) laser operation is achieved with a quantum defect (QD) of 1.5% at liquid nitrogen temperature. The laser, in-line pumped at 1535 nm, operated at 1558 nm with a slope efficiency of over 45%. This is believed to be the lowest QD eye-safe laser ever reported. CW output of over 3.3 W was obtained in this first experiment.
authors.affiliation: US Army Research Laboratory, 2800 Powder Mill Rd, Adelphi, Maryland 20783, USA.
authors.forename: Nikolay
authors.initials: N
authors.lastname: Ter-Gabrielyan
authors.forename: Larry D
authors.initials: LD
authors.lastname: Merkle
authors.forename: Akio
authors.initials: A
authors.lastname: Ikesue
authors.forename: Mark
authors.initials: M
authors.lastname: Dubinskii