The best features of diode-pumped, solid-state laser cutter — high-quality beams with brief wavelengths — are combined with the pulse-tailoring capacity for fiber lasers.
Micromachining of fine features is becoming a fundamental element of high-volume manufacturing in marketplaces as diverse as gadgets, medical devices and motor vehicle. Tiny holes, fine slashes and thin scribes are created with accuracy drills, saws, routers and, progressively more, laser cutters.
Micromachining these fine features requires accuracy and quality, high throughput, and incredibly low priced per machined feature.
However, simultaneously obtaining the necessary combination of machining quality, performance and cost have required major advancements in laser technology, only achieved lately.
Among the problems for laser cutter is eliminating only the desired material, usually through thelocalised heating system, while at the same time minimising home heating of and harm that is characterised as heat-affected area, or HAZ, to any of the remaining material. Providing near-perfect beam quality laser irradiation specifically to the mark region is a required first step to obtaining this desired consequence.
The second task for laser cutter machine is obtaining high machining throughput. Increased average result power can translate into higher ablation rates, but with certain limits. Specifically, laser cutter machine (defined as energy denseness, J/cm2) outside an optimal area result in decreased materials removal efficiency — surplus fluence is partially deposited as heat into the material, causing a decrease in throughput and quality, while insufficient fluence results in reduced ablation rates.
One useful approach to improve both throughput and quality is tailoring of the pulse sequence, with pulse bursts and pulse designs. With this approach, the time account of the laser energy can be designed and optimisedfor a particular material and its interaction with the laser light so that the event energy can be applied almost totally to material removal and not excess heating.
The cost is always affordable
Lastly, the cost is an integral criterion for laser cutter machine. The cost increase from the laser process for every single made part is, in the end, the most crucial figure. This amount includes amortisation of the in advance laser cost, cost of operation, lost productivity from downtime, and process yield. Process yield deficits also directly contribute to the full total cost increase and can be reduced with high process stableness over time for any particular laser and steady performance laser to laser.
DPSS, fibre or both
To handle these critical requirements, new laser solutions offer new capabilities. Specifically, diode-pumped solid-state (DPSS) lasers have grown to be the principal technology for micromachining, providing excellent machining quality by making a high-quality beam with brief wavelengths in the inexperiencedand UV when combined with harmonic crystals as well as ultrashort pulses.
Fiber laser cutter machine, on the other palm, has become the dominating technology for macro-processing and laser marking.
One of the most recent approaches for micromachining lasers is to incorporate fiber and DPSS laser technology.
Laser cutter machine silicon, ceramics
To illustrate the consequence of laser technology trends, several applications show the capacities of hybrid fiber content lasers and how they result in advances in micromachining. The three conditions below course nanosecond, picosecond and femtosecond pulse widths and their applications.
For high-speed, high-resolution colour printing, ink jet print minds deliver printer ink through slot machines that are laser cutter machine into a silicon wafer.