Was ist der Unterschied zwischen einer Pikosekunden-Laserschneidmaschine und einer Nanosekunden- Laserschneidmaschine ?

 Da die Nachfrage nach Industrietechnik in den letzten Jahren weiter gestiegen ist, sind die Anforderungen an Bearbeitungswerkzeuge immer höher geworden. Die Entwicklungsrichtung von Mikropräzisions-Laserschneidwerkzeugen nähert sich ebenfalls der Marktnachfrage, und die Entwicklung von Ultrakurzpulslasern hat sich allmählich herausgebildet. Das Nanosekunden-Laserschneiden übernimmt die Führung, und die Entwicklung von Pikosekunden-Laserschneidmaschinen und Femtosekunden-Laserschneidmaschinen ist für die Marktnachfrage geeignet .

Das Laserbearbeitungsverfahren besteht darin, einen hochenergetischen Laserstrahl zu verwenden

 Nanosekunden, Pikosekunden und Femtosekunden sind Zeiteinheiten, 1 Sekunde = 103 Millisekunden = 106 Mikrosekunden = 109 Nanosekunden = 1012 Pikosekunden = 1015 Femtosekunden, Pikosekunden-Laserschneidmaschine, Nanosekunden-Laserschneidmaschine bezieht sich auf den Laser Die Aktionszeit eines einzelnen Impulses innerhalb der Der Zeitbereich von Pikosekunden und Nanosekunden bezieht sich auf die Impulsbreite des Lasers. Das Laserbearbeitungsverfahren besteht darin, einen hochenergetischen Laserstrahl zu verwenden, um die Oberfläche des Materials nach dem Fokussieren zu bestrahlen, um eine physikalische oder chemische Reaktion zur Bildung eines Schnitts zu bewirken. Es handelt sich im Wesentlichen um ein thermisches Bearbeitungsverfahren, jedoch aufgrund der kurzen Einwirkzeit, meist innerhalb weniger Nanosekunden im Bereich, so dass die wärmebeeinflusste Fläche klein ist, was den Bearbeitungseffekt und die Bearbeitungsgeschwindigkeit gewährleisten kann.

Thermal effects in the nanosecond laser range are amplified

 In today’s mainstream market, our common laser processing tool is a nanosecond laser, and as the requirements of industrial technology not only increase, the thermal effect in the nanosecond laser range is amplified, and the resulting defects caused by the thermal effect The effect is not accepted by the market. A new laser processing tool came into being. It meets market demand and is also a technological breakthrough in the laser industry. In the industry, we call it micro-precision ultra-fast laser processing system, which is usually called leather. Second laser cutting machine or femtosecond laser cutting machine.

Micro-precision laser processing field

The picosecond laser cutting machine has an ultra-short pulse time, and the action time of a single pulse is only a few picoseconds, so its thermal effect is very small, or even negligible. Compared with the processing of a nanosecond laser cutting machine, there is no recast material in the entire processing process, the processing process is clean, and the absorption of laser energy is less dependent on the material or wavelength. Therefore, in the field of micro-precision laser processing, the picosecond laser cutting machine and femtosecond laser cutting machine of the ultra-fast laser processing system provide a broad space for development, and its processing characteristics are destined to be an important position in the future.

laser cutter

Compared with the nanosecond laser, the picosecond laser cutting machine has better processing effect and processing speed. In the market application field, the picosecond laser also has a wider space, such as solar cell laser etching (narrower line width), OLED laser Cutting (smaller chipping), laser drilling of brittle materials (faster speed), etc., can do things that cannot be done in the nanosecond time range, mainly due to the influence of the heat-affected zone. From the figure below, we can Intuitively see the difference between ultrafast picosecond laser and nanosecond laser. In the figure, we find that the thermal impact area and thermal impact of the material in the nanosecond range, while the ultra-fast picosecond laser cutting machine has almost negligible thermal impact, so the processing effect is more ideal. At the same time, the action time is short, the accuracy is higher, and the processing speed is faster.

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What is the difference between a picosecond laser cutting machine and a nanosecond laser cutting machine

 It is precisely because of the ultra-fast picosecond laser cutting machine's low heat, cold ablation, and high precision characteristics that it has extraordinary performance in stainless steel, aluminum, titanium alloy, sapphire, ceramics, glass and other materials, and is widely used in scientific research, biology Instruments, solar photovoltaics, electronic product manufacturing, semiconductor manufacturing and other fields have an absolute darling status.

Of course, the mainstream laser processing market currently on the market is still dominated by nanosecond lasers. The reason is that the cost of picosecond ultrafast laser cutting machines is high. The future trend must be towards the field of picoseconds and femtoseconds. The future can be expected