Nanosecond laser, picosecond laser, femtosecond laser, names only differ by one word, but prices may differ several times, and processing effects are vastly different. Many people may ask: What is the difference between them? Just give an analogy to understand.
1. Nanosecond laser
Nanosecond laser, like cutting butter with red hot iron chopsticks. It can be cut open, but the edges will melt, become sticky, and even burn. It belongs to typical thermal processing: the energy application time is relatively long, the heat has time to diffuse to the surrounding area, the material has not completely separated, and the surrounding area has already been affected.
2. Picosecond laser
Picosecond laser, like switching to a sharper knife. Cut more cleanly, with significantly reduced edge compression and thermal effects, but have not yet reached the extreme. It belongs to quasi cold processing: faster speed, heat does not have time to spread widely, and higher processing accuracy.
3. Femtosecond laser
Femtosecond laser is like a self cooling 'ice blade'. When cutting, the material had not yet reacted, and the structure had already been precisely peeled off. It is closer to true cold processing: it does not rely on "burning" the material, but on accurately applying energy in a very short time, resulting in less damage and cleaner edges.
heir core difference lies in one word, 'fast',
Nanosecond: One billionth of a second
Picoseconds: One billionth of a second
Femtoseconds: One billionth of a billionth of a second
For every level faster, there is a difference of 1000 times
The faster the speed, the less heat can diffuse, and the more refined the processing becomes
So, for cutting metal plates, pursuing efficiency and cost, nanosecond laser may be more suitable; Cut mobile phone glass and sapphire watch mirrors, ensuring that the edges do not break and picosecond laser is more stable; Cutting chips and wafers requires extremely high precision and minimal damage, and femtosecond laser has more advantages.
But these three types of lasers are not "the more expensive the better", but the more accurate the better.
Choosing the right one can achieve twice the result with half the effort; Choosing the wrong one not only wastes costs but also fails to achieve the desired results. Those who truly understand laser processing look at whether it matches the material, precision, and efficiency requirements. This is also the philosophy that Shenzhen Chuangkeda Precision Electromechanical Co., Ltd. has always adhered to - not blindly recommending the most expensive equipment, but helping customers match the most suitable laser solution based on their specific processing scenarios, starting from dimensions such as material type, cutting accuracy, and production capacity requirements.
