Diode pumped Nd:YVO4 laser at 1.34 μm Q-switched and mode locked by a V3+:YAG saturable absorber

Laser diode end-pumped V:YAG passively Q-switched UV lasers at 335 nm

“…γ is the inversion reduction factor with a value between 0 and 2 [31]. β is the ratio of the excited-state absorption cross section to that of the ground state absorption in the saturable absorber with a value of 0.09 -0.28 ,this value is about 0.1 for V:YAG operated at 1340 nm [20]. For effective Q-switched operation, the quick Q-switched requirement must be satisfied according the optimization theory [32], that the ratios of the ground absorption crosssection of saturable absorber to the stimulated emission cross section of the laser crystal is larger than 10, and the larger of this ratios, the better of the Q-switched operation.…”

Determination of Thermal-Diffusivity Dependence on Temperature of YAG Single Crystals with Different Concentrations of Yb3+ and V3+ Doping Ions

“…V:YAG crystal used in a laser technique assures a Q-switched operation and can be used as a saturable absorber. The group of YAG was studied in many arrangements, i.e., for switching of Nd:YAP, Nd:YAG, Nd:YVO 4 , or Nd:KGW lasers with the flash lamp [7,8] or diode pumping [9].…”

Passive Q-switch mode-locking of 1.34μm Nd:GdVO4lasers with Co2+:LMA saturable absorber

“…Therefore, the passively Q-switched and mode-locked lasers operating at 1.3 μm have been attracted a great deal of attention. In recent years, A. Agnesi, et al demonstrated a Q-switched and mode-locked Nd:YVO 4 with the average power of 505 mW at 1342 nm and the subnanosecond pulses energy of 0.7 μJ by used V 3+ :YAG crystal as the saturable absorber [8]. G.J.…”