title: Thermal effects in high-power CW second harmonic generation in Mg-doped stoichiometric lithium tantalate.
abstract: We investigated thermal behaviors of single-pass second-harmonic generation of continuous wave green radiation with high efficiency by quasi-phase matching in periodically poled Mg-doped stoichiometric lithium tantalate (PPMgSLT). Heat generation turned out to be directly related to the green light absorption in the material. Strong relation between an upper limit of the second harmonic power and confocal parameter was found. Single-pass second-harmonic generation of 16.1 W green power was achieved with 17.6% efficiency in Mg:SLT at room temperature.
authors.affiliation: Counsil for Scientific and Industrial Research, National Laser Centre, Pretoria, South Africa.
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Tovstonog
authors.forename: Sunao
authors.initials: S
authors.lastname: Kurimura
authors.forename: Ikue
authors.initials: I
authors.lastname: Suzuki
authors.forename: Kohei
authors.initials: K
authors.lastname: Takeno
authors.forename: Shigenori
authors.initials: S
authors.lastname: Moriwaki
authors.forename: Noriaki
authors.initials: N
authors.lastname: Ohmae
authors.forename: Norikatsu
authors.initials: N
authors.lastname: Mio
authors.forename: Toshio
authors.initials: T
authors.lastname: Katagai
mesh_terms: D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D008027:Light; D008094:Lithium / Q000737:chemistry*; D008274:Magnesium / Q000737:chemistry*; D008422:Materials Testing; D008962:Models, Theoretical; D010087:Oxides / Q000737:chemistry*; D012542:Scattering, Radiation; D013635:Tantalum / Q000737:chemistry*; D013696:Temperature
chemical_list: D010087:Oxides; C473347:lithium tantalate oxide; D013635:Tantalum; D008094:Lithium; D008274:Magnesium