Title :
Laser operation of epitaxially grown Yb:KLu(WO4)2--KLu(WO4)2 composites with monoclinic Crystalline structure
Author :
Griebner, Uwe ; Liu, Junhai ; Rivier, Simon ; Aznar, Ana ; Grunwald, Rüdiger ; Solé, Rosa Maria ; Aguiló, Magdalena ; Díaz, Francesc ; Petrov, Valentin
Author_Institution :
Max-Born-Inst. for Nonlinear Opt. & Ultrafast Spectrosc., Berlin, Germany
fDate :
3/1/2005 12:00:00 AM
Abstract :
Epitaxial monoclinic double tungstate composites based on the strongly anisotropic KLu(WO4)2 (KLuW) were grown with high crystalline quality and laser operation of ytterbium was demonstrated for the first time. Highly efficient CW laser emission of an Yb:KLuW-KLuW crystal was achieved near 1030 nm. The 100-μm-thick Yb:KLuW layer was pumped at wavelengths near 980 nm by a tapered diode laser as well as by a Ti:sapphire laser. More than 500 mW of CW output power and slope efficiencies up to 66% were obtained at room temperature without cooling.
Keywords :
composite materials; epitaxial growth; lutetium compounds; optical materials; optical pumping; potassium compounds; solid lasers; ytterbium; 100 mum; 1030 nm; 20 degC; 980 nm; KLu(WO4)2-KLu(WO4)2: Yb; Ti:sapphire laser pumping; Yb:KLu(WO4)2-KLu(WO4)2 composites; cw laser emission; diode laser pumping; double tungstate composites; epitaxial growth; monolithic crystalline structure; slope efficiency; Absorption; Anisotropic magnetoresistance; Crystalline materials; Crystallization; Diode lasers; Laser excitation; Optical materials; Power generation; Pump lasers; Temperature; Diode pumping; Yb lasers; epitaxial layers; monoclinic double tungstates;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.842313
