Efficient continuous-wave in-band pumped Nd:KY(MoO4)2 laser. (4th May 2018)

• Record Type: Journal Article
• Authors: Loiko, Pavel; Kifle, Esrom; Serres, Josep Maria; Mateos, Xavier; Aguiló, Magdalena; Díaz, Francesc; Vilejshikova, Elena; Kuleshov, Nikolai; Pavlyuk, Anatoly
• Is Part Of: Laser physics letters. Volume 15:Number 6(2018:Jun.)
• Publication Date: 2018-05-04
• Subjects: molybdate crystals -- neodymium ions -- laser materials -- spectroscopy -- in-band pumping; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aab82f
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We report on highly-efficient laser operation in the orthorhombic Nd 3+ :KY(MoO4 )2 (Nd:KYMo) double molybdate crystal. 2 at.% Nd:KYMo crystals were grown by the Czochralski method under low temperature gradients. Under Ti:Sapphire laser pumping at 874 nm (in-band, 4 I9/2 → 4 F3/2 transition), a compact continuous-wave (CW) c -cut Nd:KYMo laser generated 0.43 W at 1067 nm with a slope efficiency of 71% (with respect to the absorbed pump power) and a laser threshold of only 40 mW. For a standard pump wavelength of ~810 nm, the peak output was scaled to 0.55 W in a quasi-CW mode. A negative thermal lens has been detected for Nd:KYMo.