A compact pulsed laser for dentistry

Abstract A three-wavelength pulsed laser for dental application is developed. The laser houses the Nd:YAG resonator ( 1.06/1.32 μm ) for soft-tissue treatment and Er:YAG resonator ( 2.94 μm ) for caries removal and fits and fissure treatment. Two heads share the cooling unit and two identical high-voltage power supply modules in order to achieve compactness. The Nd:YAG laser has 10 W at 1.06 μm and 7 W at 1.32 μm with a pulse duration of 100 μs . An Er:YAG laser of 2.94 μm has 3.5 W , 20 Hz and a pulse duration of 250 μs . The beams are delivered through fibers and the laser size is 75×55×32.5 cm .