title: High-efficiency resonantly pumped room temperature Ho:YVO4 laser.
abstract: An efficient 2 μm room temperature Ho:YVO(4) laser resonantly pumped by a 1.94 μm Tm:YAP laser is demonstrated, for the first time to our knowledge, in this Letter. Up to 8.58 W of laser output at 2053 nm is obtained with the optical-to-optical conversion efficiency as much as 41.2%. The output beam had quality of M2factor with Mx(2) of 3.58 and My(2) of 1.76 at 8 W output level. In addition, we also obtained 4.18 W laser output at 2066 nm and 7.04 W at 2040 nm from the Ho:YVO(4) laser with conversion efficiency of 27.8% and 33.8%, respectively.
authors.affiliation: National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China.
authors.forename: Gang
authors.initials: G
authors.lastname: Li
authors.forename: Bao-Quan
authors.initials: BQ
authors.lastname: Yao
authors.forename: Pei-Bei
authors.initials: PB
authors.lastname: Meng
authors.forename: You-Lun
authors.initials: YL
authors.lastname: Ju
authors.forename: Yue-Zhu
authors.initials: YZ
authors.lastname: Wang
mesh_terms: D006695:Holmium / Q000737:chemistry*; D053844:Lasers, Solid-State; D013057:Spectrum Analysis; D013696:Temperature; D014638:Vanadates / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: D014638:Vanadates; D015019:Yttrium; D006695:Holmium