A fiber-coupled laser-diode (LD) end-pumped Nd:GdVO_4 slab continuous-wave (CW) 912-nm laser and an LD bar end-pumped Nd:GdVO_4 slab CW 912-nm laser are both demonstrated in this paper.Using the fiber-coupled LD of en...A fiber-coupled laser-diode (LD) end-pumped Nd:GdVO_4 slab continuous-wave (CW) 912-nm laser and an LD bar end-pumped Nd:GdVO_4 slab CW 912-nm laser are both demonstrated in this paper.Using the fiber-coupled LD of end-pumped type,a highest CW 912-nm laser output power of 10.17 W is obtained with a high optical-to-optical conversion efficiency of 24.6% and a slope efficiency of 34.5%.The measured M 2 factors of beam quality in x and y directions are 5.3 and 5.1,respectively.Besides,an LD bar of end-pumped type is used to realize CW 912-nm laser output,which has the advantages of compactness and low cost.When the pump power is 38.8 W,the output power is 8.87 W and the measured M 2 factors of beam quality in x and y directions are 16 and 1.31,respectively.In order to improve the beam quality of the 912-nm laser at x direction,a new quasi-concentric laser resonator will be designed,and an LD bar end-pumped Nd:GdVO_4 slab high-power CW 912-nm TEM_(00) laser will be realized in the future.展开更多
A theoretical model to simulate an end-pumped CW Nd 3+ :GdVO 4 laser at 1063 nm is presented. Its essence is to use the propagation equations to demonstrate the spatial evolutions of the pump and the laser powers in t...A theoretical model to simulate an end-pumped CW Nd 3+ :GdVO 4 laser at 1063 nm is presented. Its essence is to use the propagation equations to demonstrate the spatial evolutions of the pump and the laser powers in the cavity, hence it is applicable to both low and high gain lasers. The simulation results obtained by this model are in good agreement with the experimental observations reported in the literature for a Ti:sapphire-pumped Nd 3+ :GdVO 4 laser. Moreover, some parameters, such as the reflectivity of output coupler, the spot size of laser beam and the crystal length, are discussed with a view to optimizing the laser performance.展开更多
文摘A fiber-coupled laser-diode (LD) end-pumped Nd:GdVO_4 slab continuous-wave (CW) 912-nm laser and an LD bar end-pumped Nd:GdVO_4 slab CW 912-nm laser are both demonstrated in this paper.Using the fiber-coupled LD of end-pumped type,a highest CW 912-nm laser output power of 10.17 W is obtained with a high optical-to-optical conversion efficiency of 24.6% and a slope efficiency of 34.5%.The measured M 2 factors of beam quality in x and y directions are 5.3 and 5.1,respectively.Besides,an LD bar of end-pumped type is used to realize CW 912-nm laser output,which has the advantages of compactness and low cost.When the pump power is 38.8 W,the output power is 8.87 W and the measured M 2 factors of beam quality in x and y directions are 16 and 1.31,respectively.In order to improve the beam quality of the 912-nm laser at x direction,a new quasi-concentric laser resonator will be designed,and an LD bar end-pumped Nd:GdVO_4 slab high-power CW 912-nm TEM_(00) laser will be realized in the future.
基金supported by the National Natural Science Foundation of China (Grant No 10104009)
文摘A theoretical model to simulate an end-pumped CW Nd 3+ :GdVO 4 laser at 1063 nm is presented. Its essence is to use the propagation equations to demonstrate the spatial evolutions of the pump and the laser powers in the cavity, hence it is applicable to both low and high gain lasers. The simulation results obtained by this model are in good agreement with the experimental observations reported in the literature for a Ti:sapphire-pumped Nd 3+ :GdVO 4 laser. Moreover, some parameters, such as the reflectivity of output coupler, the spot size of laser beam and the crystal length, are discussed with a view to optimizing the laser performance.
