title: Tm:YLF laser-pumped periodically poled MgO-doped congruent LiNbO3 crystal optical parametric oscillators.
abstract: At room temperature, highly efficient, doubly resonant periodically poled MgO-doped congruent LiNbO3 crystal optical parametric oscillators (OPO) pumped at 1.9 μm have been realized for the first time to our knowledge. A 2.9 W, 2 kHz acousto-optic Q-switched homemade Tm:YLF laser served as a pump source. A 900 mW mid-infrared emission generated from an OPO is illustrated. The overall mid-infrared generation conversion efficiency reached 31%, whereas the slope efficiency was up to 70%.
authors.affiliation: Key Laboratory of Space Laser Communication and Testing Technology, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, Shanghai, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Xu
authors.forename: Shuaiyi
authors.initials: S
authors.lastname: Zhang
authors.forename: Weibiao
authors.initials: W
authors.lastname: Chen
mesh_terms: D007259:Infrared Rays; D053844:Lasers, Solid-State; D008277:Magnesium Oxide / Q000737:chemistry*; D009556:Niobium / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*
chemical_list: D010087:Oxides; D009556:Niobium; C091692:lithium niobate; D008277:Magnesium Oxide