8.9-W continuous-wave, diode-end-pumped all-solid-state Nd:YVO4 laser operating at 914 nm

Diode-pumped high-repetition-rate acousto-optically Q-switched Nd:YVO4 laser operating at 914 nm

“…As shown in Fig. 2, it can be seen that the M2 with T = 9% was favorable of achieving high power pulsed 914 nm laser output, and it was higher than that of a cw operation because of instantaneous peak gain was much higher during pulsed operation [27,28]. Using the cavity with a length of L = 45 mm, the lasing threshold was 23.4 W and the maximum output power of 2.2 W was obtained at an incident pump power of 45.3 W, corresponding to an optical conversion effi ciency of 4.9% and an average slope efficiency of 8.8%, respectively.…”

Diode-pumped Er3+:Yb3+:NaCe0.43Gd0.57(WO4)2pulse laser passively Q -switched with a Co2+:Mg0.4Al2.4O4saturable absorber at 1.53μm

“…By fitting a Gaussian beam propagation expression to these data, the quality factor M 2 of the output beam was estimated roughly to be about 6. A large beam quality factor may mainly originate from the thermal effect caused by the low thermal conductivity (about 1.1 W m −1 K −1 [14]) of the NCGW crystal [23]. When a tungstate crystal with higher thermal conductivity is used as the host doped with Er 3+ , Yb 3+ and Ce 3+ ions in the future, the output energy and beam quality of a passive Q-switched pulse laser may be further improved.…”

All solid-state CW Nd:LuVO4-LBO yellow-green laser under direct 888 nm pumping

“…A well known repre sentative is Nd:YVO 4 [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19], which has been widely used both in research and commercial devices. Another vanadate crystal, Nd:GdVO 4 [20][21][22][23][24][25][26][27][28][29][30][31], which was confirmed to be superior to Nd:YVO 4 in thermal properties, was also investigated extensively.…”