Title :
High-Power Laser Performance of Yb:YAl3(BO3)4 Crystals Cut Along the Crystallographic Axes
Author :
Liu, Junhai ; Mateos, Xavier ; Zhang, Huaijin ; Li, Jing ; Wang, Jiyang ; Petrov, Valentin
Author_Institution :
Max-Born-Inst. for Nonlinear Opt. & Ultrafast Spectrosc., Berlin
fDate :
5/1/2007 12:00:00 AM
Abstract :
High-power continuous-wave laser operation near 1 mum was demonstrated at room temperature with c-cut and a-cut Yb:YAl3(BO3)4 crystals end-pumped by a fiber-coupled diode laser. Using a 2-mm-thick c-cut crystal, 10.6 W of output power was generated with an optical-to-optical efficiency of 65% and a slope efficiency of 72%. The complex polarization state of the generated laser radiation was also studied. With a 2-mm-thick a-cut crystal, sigma-polarized laser oscillation was obtained, producing a maximum output power of 8.1 W; the optical-to-optical and slope efficiencies were 56% and 61%, respectively. Complete absorption and emission cross section spectra of the Yb:YAl3(BO3) 4 crystal were also derived, revealing very strong anisotropy of the spectroscopic properties
Keywords :
optical materials; solid lasers; ytterbium; yttrium compounds; 10.6 W; 2 mm; 56 percent; 61 percent; 65 percent; 8.1 W; YAl3(BO3)4:Nd; Yb:YAl3(BO3)4 crystals; complex polarization state; fiber-coupled diode laser pumping; optical-to-optical efficiency; slope efficiency; Absorption; Crystals; Diode lasers; Fiber lasers; Geometrical optics; Optical fiber polarization; Power generation; Power lasers; Stimulated emission; Temperature; ${hbox {Yb:}}{hbox {YAl}}_{3}({hbox {BO}}_{3})_{4}$ crystal; Diode pumping; Yb laser; high-power operation;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2007.893900
