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Picosecond VS Nanosecond laser machine

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Picosecond VS Nanosecond laser machine
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Picosecond pulsed lasers have more advantages over nanosecond fiber lasers in a wide range of industrial micromachining applications. In particular, it is worth mentioning that it has almost no heat-affected zone and can handle a wide range of materials, even those that are transparent in the visible and near-infrared light regions. However, in the early days, picosecond lasers lacked practical parameters for practical applications in many production environments. And now a new generation of industrial picosecond lasers can realize the advantages of this technology.

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Micro-machining usually targets micron-level machining requirements, such as holes and grooves, while avoiding thermal damage to surrounding materials. In other words, the purpose of micromachining is to obtain fine and clean cuts with minimal heat-affected zones.

There are two basic mechanisms for precision drilling, scribing or cutting with laser. Many traditional applications mainly rely on infrared and visible light Q-switched lasers. Their pulse width is in the range of tens of nanoseconds, and the material is removed by photothermal action (see Figure 1). In this case, the focused laser beam is a closed, high-intensity heat source, which will quickly heat the target material and eventually vaporize it.

Pub Time : 2021-09-07 16:17:39 >> News list
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