High-peak-power electro-optically Q-switched laser with a gradient-doped Nd:YAG crystal.

We report on a high-peak-power electro-optically -switched laser emitting a near-diffraction-limited beam profile at 1064 nm by using a gradient-doped Nd:YAG crystal. The gradient-doped crystal features a unique combination of a reduced thermal lens effect through effectively spreading the heat load distribution within its volume. Its performance is compared with those of Nd:YAG crystals with uniform volume doping distribution operating in the -switched regime with the same laser configuration, demonstrating the higher average and peak power achievable with the gradient-doped crystal.

Effects of Dentin Ablation by a Q-Switching Er:YSGG Laser with a High Pulse Repetition Rate.

The aim of the study was to evaluate the characteristics of dentin ablation with a high pulse repetition rate Q-switching 2.79 μm laser. Dentin was ablated using a homemade Q-switching Er:YSGG laser with a high pulse repetition rate.