Highly efficient 1063-nm continuous-wave laser emission in Nd:GdVO_4

Abstract

Highly efficient 1-microm continuous-wave laser emission in 3-mm-thick, 0.5- and 1.0-at. % Nd:GdVO4 crystals longitudinally pumped at 879 nm into the laser emitting level is reported. Under Ti:sapphire pumping, the slope efficiency in absorbed power is approximately 80% for both crystals, while the slope efficiency, the optical-to-optical efficiency (at 1700-mW pump power), and the laser threshold in incident power are 79%, 78%, and 31 mW for 0.5-at. % Nd and 80%, 77%, and 40 mW for 1.0-at. % Nd, respectively. The slope efficiency is close to the quantum defect limit, the difference being fully accounted for by the residual optical losses. Under 879-nm diode laser pumping, the slope efficiency and the optical-to-optical efficiency in absorbed power of the 0.5-at. % Nd:GdVO4 crystal are 60% and 53%, owing to poorer superposition of the pumped and the laser mode volumes.

Low heat and high efficiency Nd:GdVO4 laser pumped by 913 nm

“…In the result the opto-optic conversion efficiency has been remarkably enhanced comparing with pumping by 808 nm [11][12][13][14]. Because of Stark splitting ( Fig.…”

LD-pumped Nd:GdVO4 Raman laser at 1166 nm with LiIO3 crystal

“…Nd:GdVO 4 crystal is an excellent laser crystal for solid-state laser [10][11][12][13] because it has high absorption and emission cross sections [14,15].…”

Efficient 1.34-μm laser emission of Nd-doped vanadates under in-band pumping with diode lasers

“…CW laser emission at 1.06 μm with slope efficiencies as high as of 0.80 in Nd:YVO 4 [7] and Nd:GdVO 4 [8], and of 0.79 in Nd:YAG [9] was achieved using a tunable Ti:Sapphire laser as source of excitation at 0.88 μm. These results are very close to the limit of η qd for the investigated laser crystals.…”