Title :
Efficient tunable laser operation of Tm:KGd(WO4)2 in the continuous-wave regime at room temperature
Author :
Petrov, Valentin ; Güell, Frank ; Massons, Jaume ; Gavalda, Josefina ; Sole, Rosa Maria ; Aguilo, Magdalena ; Diaz, Francesc ; Griebner, Uwe
Author_Institution :
Max-Born-Inst. for Nonlinear Opt. & Ultrafast Spectrosc., Berlin, Germany
Abstract :
Tm:KGd(WO4)2 is studied as a three-level laser on the 3F4 → 3H6 transition and a tunable source in the 2-μm spectral range, operating at room temperature. An overall tunability extending from 1790 to 2042 nm is achieved with maximum output powers of 400 mW for an absorbed pump power of 1 W. Various doping levels, pump wavelengths and polarization configurations are compared and the advantages of the monoclinic double tungstates over other Tm-hosts are outlined.
Keywords :
gadolinium compounds; laser transitions; laser tuning; optical materials; optical pumping; potassium compounds; solid lasers; thulium; 1 W; 1790 to 2042 nm; 20 degC; 400 mW; 3F4 → 3H6 transition; KGd(WO4)2:Tm; Tm:KGd(WO4)2; continuous wave regime; doping levels; monoclinic double tungstates; polarization configurations; pump wavelengths; room temperature; solid lasers; three-level laser; tunable laser; Absorption; Diodes; Laser excitation; Laser radar; Laser tuning; Optical materials; Pump lasers; Solid lasers; Temperature distribution; Tunable circuits and devices; Crystals; laser tuning; lasers; rare earth compounds; solid lasers; thulium; tungsten compounds;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2004.833193
