C. Fenic, I. Chis, R. Dabu, A. Stratan, I. Apostol, R. Stoian, C. Luculescu, C. Ghica, L. Nistor
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Dependence of the ablative effect of nanosecond laser pulses at the surface of dentine samples on the laser wavelength
A Q-switched Nd:YAG laser beam and its second and fourth harmonics were focused onto the polished surface of dentine samples in order to compare the ablative effect for the three wavelengths. A photoacoustic technique is applied for the ablation threshold determination. The Scanning Electron Microscope images of the produced craters are investigated and the volume of ablated material is determined. The necessary optical constants for the ablation calculation are experimentally determined.
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