The demand for smaller and smarter components for all kinds of products that the world needs is stimulating exciting innovations in the field of laser pointer micromachining. The continuous advancement of ultrashort pulse (USP) laser micromachining is making ultrafast technology evolve from a scientific research tool to a practical industrial micromachining solution.
Because the duration of the femtosecond laser pulse is shorter than the time required for the processed material to absorb heat, the femtosecond laser pulse can remove the material with extremely high precision and does not produce any heat-affected zone (HAZ). It will not cause thermal damage to the processed workpiece. In addition, because the processing tool is light, it is a processing method without wear, so there is no change in processing effect caused by tool attenuation. In contrast, in these mechanical micromachining methods, thermal damage and tool wear, as well as slower pulsed laser processing techniques, limit the accuracy that can be obtained in machining and will require expensive and time-consuming subsequent processing.
Small holes drilled by lasers with three different pulse widths: nanoseconds, microseconds, and femtoseconds. It can be clearly seen that the small holes drilled with femtosecond laser pulses have almost perfect surface and edge quality, without heat-affected zones and thermal damage, because it eliminates the need for expensive and time-consuming post-processing.
An emerging application of ultrashort pulse green laser pointer micromachining is to create perfect vertical walls for micro-parts, making complex movements and connections possible. In the past, the above-mentioned features were usually implemented using electrical discharge machining (EDM) technology, but in many cases, the use of ultrafast lasers can achieve better processing results and shorter processing times.