In recent years, with the increasing demand of industrial technology, the requirements for processing tools have become higher and higher. The development of micro-precision laser cutting tools is also approaching the mayor/market demand and evolving into the field of ultra-high speed lasers. The main applications for the mayor/market demand are nanosecond laser cutting, picosecond laser cutting machines and femtosecond laser cutting machines.

Nanosecond, picosecond, femtosecond in units of time, 1 second = 103 milliseconds = 106 microseconds = 109 nanoseconds = 1012 picoseconds = 1015 femtosecond, picosecond laser cutting machine, nanosecond laser cutting machine is a single pulse time in the picosecond laser, nanosecond time range, refers to the laser pulse width laser treatment is the use of high-energy laser beam irradiation of the material surface, resulting in a physical or chemical reaction to form a cut, in essence is a heat treatment method, but with a short duration, usually within a few nanoseconds, and a small heat-affected area, the treatment effect and processing speed can be guaranteed.

In today's mainstream market, our commonly used laser processing tool is the nanosecond laser. With the increase of industrial technology requirements and the expansion of thermal effects in the nanosecond laser range, the market cannot accept the derived adverse effects caused by thermal effects. A new laser processing tool emerged. It met the mayor/market demand and was a technological breakthrough in the laser industry. The industry is known as micro-precision ultra-high speed laser processing system.

Picosecond laser cutting machines have ultra-short wave pulse times, with individual pulse times of just a few picoseconds, and negligible thermal effects. Compared to processing with nanosecond laser cutters, there is no remanufactured material throughout the process, the process is clean, and the absorption of laser energy is less dependent on material or wavelength. Therefore, in the field of micro-precision laser processing, the ultra-high-speed laser processing systems of picosecond and femtosecond laser cutting machines offer a wide range of space, and their processing characteristics are bound to play an important role in the future.

Comparing the processing effects of nanosecond and picosecond lasers

The processing results and speed of picosecond laser cutting machines are superior to those of nanosecond lasers. In mayor/market applications, there is also a wide scope for picosecond lasers in the time range of nanosecond level, including laser etching of solar cells (narrow line width), laser cutting of OLEDs (small collapse), and laser punching of brittle materials (fast). In the figure, we find the heat affected area of the material and the heat affected in nanoseconds with short running time, high precision and fast processing speed.

Due to the low heat, cold dissolution and high precision characteristics of ultra-high speed picosecond laser cutting machine, it has extraordinary performance in stainless steel, aluminum, titanium alloy, sapphire, ceramics, glass and other materials, and has an absolute position in scientific research, biological instruments, solar cells, electronic product manufacturing, semiconductor manufacturing and other fields.

Of course, due to the very high cost of picosecond ultra-high speed laser cutting machine, nanosecond laser is still the mainstream laser processing market in the current market. The future trend should be developed to the field of femtosecond and femtosecond, and the future is worth looking forward to.