Title :
Diode-pumped tunable Yb:YAG miniature lasers at room temperature: modeling and experiment
Author :
Taira, Takunori ; Saikawa, Jiro ; Kobayashi, Takao ; Byer, Robert L.
Author_Institution :
Fac. of Eng., Fukui Univ., Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
We present a simple design rule for diode-laser pumped quasi-three-level lasers by using the M2 factor. The validity of this model was demonstrated by diode-pumped Yb:YAG laser experiments. The maximum output power of 1.33 W and optical slope efficiency of 63% were obtained in a 400-μm Yb:YAG chip miniature laser. Using a 200-μm Yb:YAG chip, a 70% optical slope efficiency was reached. In a coupled-cavity configuration, with a quartz birefringent tuning filter, 8.2 THz (29 nm) of tuning was obtained at room temperature. By changing to a calcite birefringent filter, single-axial-mode oscillation with an output power of 500 mW was observed
Keywords :
birefringence; laser cavity resonators; laser modes; laser theory; laser tuning; modelling; optical design techniques; optical filters; optical pumping; solid lasers; ytterbium; 1.33 W; 200 mum; 400 mum; 63 percent; 70 percent; M2 factor; YAG:Yb; YAl5O12:Yb; Yb:YAG chip miniature laser; calcite birefringent filter; coupled-cavity configuration; design rule; diode-pumped Yb:YAG laser; diode-pumped tunable Yb:YAG miniature lasers; experiment; maximum output power; modeling; optical slope efficiency; output power; quartz birefringent tuning filter; quasi-three-level lasers; room temperature; single-axial-mode oscillation; Birefringence; Diodes; Laser modes; Laser tuning; Optical filters; Optical pumping; Power generation; Pump lasers; Temperature; Tunable circuits and devices;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.585821
