By Cnr Ifn
Despite its undisputed precision, ultrafast lasers micromachining still suffers of long processing time. Enhancing of the efficiency is possible by tuning the laser energy in time and space. Our group works on the development and exploitation of advanced temporal and spatial laser beam shaping to deliver to the workpiece a tailored heat input by, e.g., generating bursts of ps-delayed femtosecond pulses, using non-diffractive, self-healing Bessel beams or exploiting diffractive optical element. Beam shaping thus gives the possibility to enhance the efficiency, flexibility and the precision of laser microfabrication.
