Study on laser-diode end-pumped 912 nm Nd:GdVO_4 laser at liquid nitrogen temperature

Analysis is presented for quasi-three-level lasers.The threshold in terms of incident pump power on the 912 nm 4F3/2→4I9/2 transition and some factors impacting laser output are given.Diode-end-pumped Nd:GdVO4 laser at 912 nm on the condition of liquid nitrogen is obtained for the first time.With incident pump power of 12.5 W,output of 1.1 W is obtained,with the slope efficiency versus absorbed pump power up to 18%.The stimulated-emission cross section is estimated and red shift with the temperature increasing is observed.