High Power Diode Lasers are New Trends

Posted by Mike on March 25th, 2017

High-power diode lasers are based on their small size, light weight, high photoelectric conversion efficiency, long service life, high stability and reliability, and will become a new application tool and trend in the kids laser pointer industry, and in many cases, Lasers will increasingly replace CO2 lasers. At the same time, for a large number of laser products, customers are opening up more new applications, such as high-speed cladding, welding, deep penetration welding and quenching of large parts processing. For customers, they require a higher power laser, better beam quality, lower cost.

Due to the characteristics of ultra-fast laser non-thermal processing, making laser processing of low melting materials become possible, in terms of stents, such as magnesium alloy or polylactic acid and other polymer scaffold. Due to the low melting point and degradable properties of these stents, it is not possible to use post-processing of general metal brackets after cutting, so only ultrafast laser cutting can be used. Magnesium flammable and low melting point, fiber laser cutting magnesium alloy stent melting serious, a lot of heat and even produce fire phenomenon. The use of ultra-fast 500mw laser pointer cutting magnesium stent, not only did not melt, no heat processing to avoid the risk of burning.

The melting point of the polymer material is much lower than the melting point of the metal, so the polymer scaffold is more sensitive to the thermal effect. Once the degradable polymer melts and then crystallizes, its degradation rate in the human body will change, does not meet the needs of biodegradable stent. Common assessment of the quality of cutting indicators is to observe the cutting surface morphology, the ideal cutting surface for the sand surface. Unlike the metal emphasis on smooth, if polylactic acid cutting surface smooth and bright, said the polymer melted and then re-crystallization, so smooth cutting surface is unqualified. As can be seen from the above examples, ultra-fast laser cutting brackets, both in terms of ability or quality are significantly better than fiber laser. Ultra-fast laser cutting metal stent superior quality, shorten the actual stent manufacturing time. And for fiber 10 watt laser pointer can not cut the third generation of degradable stent, ultrafast laser is the ideal solution.

With the development of new technologies, lasers cover increasingly large spectrum, but some wavelengths are still not easy to achieve. This includes an ultraviolet band of about 300 nanometers, especially if a short pulse duration is to be achieved and has a high intensity. In general, UV pulse generation is usually generated by a nonlinear process, such as the generation of second harmonics or the generation of frequency, where the new photons are superimposed by summing the sum of the basic pulsed photons to give them higher energy and have a new The color formation. However, the efficiency of these processes is very low.

Now the society is everywhere in the application of laser: doctors use it to correct vision, the cashier scans your goods, quantum scientists to control the quantum bits of future quantum computers. For most applications, the current lasers are very cumbersome and are full of energy inefficient lasers, but quantum scientists need lasers that can work at very low temperatures and very small scales. For more than 40 years, they have been looking for efficient and accurate microwave lasers that will not be disturbed in very cold conditions, under quantum operating conditions. The high power laser pointer has a unique characteristic that emits a fully synchronized coherent light. This means that the line width (corresponding to the color) is very narrow A typical laser is composed of a large number of emitters (atoms, molecules or semiconductors). These conventional lasers are usually inefficient and consume a lot of heat during the lasing process. This makes it difficult for them to run at low temperatures, such as when operating a quantum computer.

Laser is still relatively young industry, every year there will be new applications, emerging markets lead the industry development, it is not like the traditional industry, with the fierce competition, the space is getting smaller and smaller. From the company focused on precision machining point of view, the future of the 30mw green laser will be higher pulse, ultra-fast direction. Playing on the PCB two-dimensional code, there are different shades of color and material differences. Quality product tracking, compared to ordinary coding machine, PCB laser coding technology more high-end, the printed information more clearly, easier to scan identification, record information is more comprehensive, more complex circumstances in the environment easier to track product.

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