Friday, November 2, 2012

The disassembly process of laser pointer is not complicated

The technical theory of laser pointer is very important to the production of laser pointer .
In line with the development of laser welding, plastics manufacturers are actively able to cope with the laser welding of materials. DuPont noted that the polymer on the near-infrared laser transmittance of at least 20-50%, in order to obtain good welding effect, while the vast majority of the qualities of plastic and have a lot of colored translucent plastic light transmission rate to achieve this requirement. In other words, the vast majority of plastic can be laser welded. On the other hand, the plastic on the near-infrared laser absorption rate is also an important factor affecting the welding effect, and most thermoplastics adding an appropriate amount of carbon black, you can dramatically increase their rate of absorption of the laser. However, laser welding for some materials, there are still some limitations. One typical example is the PPS and LCP, such as plastic, because of the near-infrared laser transmission rate is very low, if the two materials are filled with black light, because both are black, the laser can not penetrate, so the laser welding can not be. The disassembly process of laser pointer is not complicated.
The multifunctional laser pointer is taking up more market share. On the contrary, if the two materials are all transparent or white, near-infrared laser can be transmitted through, resulting in near-infrared laser absorption is low, this case, nor can a laser welding. In addition, many mineral-filled compounds, are not suitable for welding with a laser. These limitations, resulting in a series of laser welding of plastic used on the great barriers. To improve the transmission rate of the polymer and the laser absorption rate, and many plastics manufacturers to study, now to solve many technical obstacles. For example, BASF has launched a black material through laser Ultramid A3WG6LT (for nylon 66) and Ultramid B4300g6LT (for PBT). This uses a new dye material, although the black, but to maintain a high near-infrared laser transmittance, and thus achieve two kinds of black products for laser welding. The powerful function of laser pointer is very popular in the market. Longitudinal mode laser mode and transverse mode of the points, commonly referred to as the mean transverse mode. Transverse resonant cavity light field on behalf of the lateral distribution of the (perpendicular to the light propagation direction), when an important laser parameters, has a great influence on the welding results.
The output of laser pointer will be increased by taking some new measures. Shanghai scientists have developed a fiber laser to fiber laser output power has increased to a new level, maximum output power up to 107W, have been far ahead of the national counterparts. In 2004, Nankai University also reported a peak power of 206kW continuously pumped Q-switched pulse.

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