Resonantly pumped Er3+:Sc2O3 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.
© 2008 Optical Society of America
Lasers and Laser Optics
Original Manuscript: April 28, 2008
Manuscript Accepted: May 10, 2008
Published: June 27, 2008
Nikolay Ter-Gabrielyan, Larry D. Merkle, Akio Ikesue, and Mark Dubinskii, "Ultralow quantum-defect eye-safe Er:Sc2O3 laser," Opt. Lett. 33, 1524-1526 (2008)