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For welding applications, the most meaningful relationship of depth of focus (depth of field) is the so-called 5% definition. 5% of depth of focus (L5,%) is defined as a range, within this range, changes in spot size does not exceed 5%. In other words, if the "in focus" spot was 0.1 mm, depth of focus, 5%, the spot size is not greater than 0.105 mm. L5, depends on the focused spot size (d), the output beam quality (BQexit) and laser wavelength (λ, lamp-pumped YAG 1064nm, diode-pumped disk lasers for 1030nm), the relationship between them can be expressed as. Some others ofgreen laser pointermight use the battery of the specific specification.
Therefore, the quality of any laser beam can be a direct reflection of the relevant parameters of its ability to focus, and spot size, focal length and depth of focus. Over the past few years, the field of CO2 laser welding parts unique concept has been development. Be possible to achieve this welding process (which is famous for remote welding) only increased power and good beam quality (such as Trumpf, TLF 6000 the HQ, 6 kW laser, nearly Gaussian distribution). Disc laser beam quality is very good, remote welding using YAG laser. The customer wants to usegreen laser pointerfor a long period.
Unlike the CO2 laser remote welding system that requires the use of the bucket frame structure with flight optical components to send the beam of YAG beam delivery capability remote welding using fiber optics, optically coupled to the scanning head mounted on a mechanical hands . There are many differences between the CO2 and YAG remote welding, these differences should be considered when assessing any remote welding system. They also provide clues for further research and analysis. The disk laser's excellent beam quality allows the beam passing through a smaller diameter fiber optic cable transmission, therefore, at a given focal length, can produce a smaller focused spot diameter (for fast processing of a higher power density). The barrier of green laser pointer is flexible.
Or, given the focused spot size, can produce greater processing depth of field (larger processing window, the more stable and further welding). Photonic crystal fiber laser. Abstract: The fiber laser is a laser field these years much the focus of attention, with many of the traditional optical fiber is difficult to achieve the advantages of photonic crystal fiber, high-power fiber laser with photonic crystal fiber as the gain medium has been widespread concern. In this paper the basic principles of fiber lasers, a brief introduction, and highlighted the double-clad photonic crystal fiber laser. Introduction fiber lasers and solid, gas lasers, fiber lasers have many unique advantages. The customer can charge two different kinds of batteries used by different kinds of green laser pointer with only one charger.
Such as beam quality, small size, light weight, maintenance-free, air cooling, easy to operate, low running cost, long-term use in industrial environment; and high precision machining, high speed, long life, energy saving, in particular, intelligent , automation, flexible. Therefore, it has been replaced in many areas of traditional YAG and CO2 lasers. However, traditional fiber lasers due to optical waveguide structure limits its small numerical aperture, low coupling efficiency, as well as the core area to maintain single-mode transmission in high-power operating conditions prone to nonlinear effects and thermo-optical and other issues, the output power is very restricted. The battery ofgreen laser pointercan be used to charge both 16340 battery and 18650 battery at the same time.