With the recent development of portable electronic products such as mobile phones, digital cameras and notebook computers in light, thin, short and small, printed circuit boards (PCBs) have gradually emerged with high density interconnection technology as the main layer , Multi-functional features. In order to effectively ensure the electrical connection between the layers and the external device is fixed, via (via) has become one of the important components of multi-layer PCB. The current cost of drilling usually accounts for 30% to 40% of PCB board costs. In high-speed, high-density PCB design, the designer always want the smaller the better the hole, so the board can not only leave more wiring space. And the smaller the hole, the more suitable for high-speed circuit. The traditional size of the smallest mechanical drilling is only 100μm, which obviously can not meet the requirements, on behalf of the take is a new type of blue laser pointer micro-hole processing methods. At present, the use of CO2 laser processing in the industry can be achieved through the hole diameter of 30-40μm holes or UV laser processing about 10μm holes.

Laser micromachining technology in the equipment manufacturing, automotive and aviation precision manufacturing and a variety of micro-processing industry can be used for laser cutting, drilling, engraving, scribing, heat penetration, welding, such as more than 20 microns size inkjet printer The processing of the ink jet mouth. The use of laser surface treatment techniques such as micro-pressure type, grinding and polishing to process a variety of micro-optical components can also be used to fill the porous glass, glass ceramic amorphization to change the structure, and then, by reconciling external mechanical force, and then The micro-optics are processed by micro-forming in the softening stage by means of a plasma-assisted microforming.

Femtosecond brightest laser pointer is a pulse in the form of the operation of the laser, the duration is very short, only a few femtoseconds, a femtosecond is 10 negative seconds, that is, 1/1000 trillion seconds, it is more than the use of electronics The shortest pulse obtained by the method is several thousand times shorter than the shortest pulse that human beings can obtain under experimental conditions. This is the first feature of femtosecond lasers. The second feature of the femtosecond laser is that it has a very high instantaneous power that can reach one trillion kilowatts and a hundred times more power than the current total power generation. The third characteristic of the femtosecond laser is that it can focus on a smaller spatial area than the diameter of the hair, making the intensity of the electromagnetic field several times higher than the force of the electrons around the nucleus.

Fiber laser industry applications continue to benefit from the continuous development of technology, mainly in the cost, energy consumption and space in three areas continue to decrease. Fiber best burning laser pointer technology is becoming more mature than its alternative technology, especially in terms of energy savings. Compared to other technologies, fiber lasers will produce less carbon dioxide at work while delivering higher performance. Such as reducing energy consumption, reducing waste and the use of harmless materials will enhance the popularity of fiber laser technology in the field of laser. From the return point of view, R & D investment will increase the market share of the product is also conducive to the formation or maintain their own market competitive advantage.

CO2 laser and YAG laser is a continuous and long pulse laser, mainly by focusing to form a high energy density, which in the local high temperature to ablate the material, basically belong to the hot processing category, processing accuracy is limited. Excimer lasers rely on their short wavelength (UV) and photochemical interaction with the material, the characteristic scale can reach the order of microns, but the excimer 1000mw laser pointer required gas is corrosive, difficult to control, and high-strength ultraviolet laser processing The optical components of the system are liable to cause damage, and their application is thus limited. With the deepening of the laser field, the time-domain width of the laser pulse is compressed much shorter, from the order of nanoseconds (10-9s) to the picosecond (10-12s) until the femtosecond (10-l5s ) Order of magnitude.

Laser micro-processing production efficiency, low cost, stable and reliable processing quality, with good economic and social benefits. Femtosecond laser with its unique pulse duration is short, the peak power of high superior performance is breaking the previous traditional laser processing methods, creating a material super fine, no thermal damage and 3D space processing and processing of new areas. Femtosecond laser processing technology applications include microelectronics, photonic crystal devices, high information transmission speed (1Tbit / s) of optical fiber communication devices, micro-machining, new three-dimensional optical memory, and micro-medical device production and cell biotechnology Has a wide range of application prospects. It can be predicted that 300mw laser pointer micro-fabrication technology will be an irreplaceable advantage of the 21st century, the rapid development of a high-tech.