A comprehensive study of Nd:YAG, Nd:YAlO3, Nd:YVO4 and Nd:YGdVO4 lasers operating at wavelengths of 0.9 and 1.3 μm. Part 1: cw-operation

Eye-safe Nd :YVO4laser with intracavity SRS in a BaWO4crystal

“…5a), which points to single-mode lasing. The spectral width of the 4 F 3/2 ® 4 I 13/2 optical transition in the Nd : YVO 4 crystal is approximately threefold larger than in Nd : YAG [19]. The use of a cavity with a high Q-factor for the wavelength 1342 nm in the case of intracavity SRS leads to multimode lasing.…”

Crystal Planar Waveguides, a Power Scaling Architecture for Low-Gain Transitions

“…As illustrated in Fig. 4 and reported in [42], [45]- [47], threshold levels are on the order of a few kW·cm −2 , clearly dependent upon the emission cross section, pump saturation irradiance, and the quasi-levelness associated with the population fractions of the upper and lower energy levels through γ. The range of different hosts listed in Fig.…”

“…4, illustrates the potential range of the splitting of the ground state along with the effective emission cross section for the "9xx nm" transition. As can be seen YAG has the lowest threshold condition, while GdVO 4 and YAlO have higher emission cross sections, which enables these hosts to reach higher output powers under comparable conditions [45], however the anisotropic thermo-optical characteristics lead to the development of a highly aberrated thermal lens, degrading the laser performance and beam quality for these bulk hosts under power scaling.…”

High power diode-pumped passively Q-switched and mode-locking Nd:GdVO4 laser at 912nm

“…These characteristics will be more favorable for the operation of 912 nm quasi-three-level laser and 456 nm deep-blue laser by frequency-doubling, and many results about continuous-wave 912 nm and 456 nm lasers have been reported [3,7]. Considering the gain competition with four-level lasers and severe thermal lensing effect during the pulsed operation of quasi-three-level lasers [8,9], Nd: GdVO 4 crystal will be a highly performed laser medium for Q-switched 912 nm laser operation.…”