![]() I used old hard drive platters to fabricate an “emergency” mirror (which is still in the unit and working GREAT). Mo will last up to 3 years or so, K9….well.you really must keep them spotlessly clean and avoid ANY scratches or imperfections. Si will last around 9 months to a year, Cu’s will go a year or more but scratch easily and require constant cleaning/polishing. K9 Mirror: Close to worthless gold-coated glass (likely from re-melted milk bottles). Mo Mirror: Molybdenum, very tough but the lowest reflective index,great for 80 watt sources or above.Ĭu Mirror: Copper, Below gold Si for reflective index but tough and better index than Mo. Si Mirror: Silicon Glass Gold coated, great reflective index, not good for anything over 80 watts. Mirrors are ideal for laser applications where space is limited, as a beam can be precisely directed multiple times to fit within a particular area. We will briefly touch on some common mirror types and their properties: The steering mirrors direct the laser beam to and allow the movement of the head and gantry transport system. Laser mirrors are designed with a high degree of reflectivity for a specific wavelength or range of wavelengths using various substrates, coatings, or a combination of the two. The beam is bounced through the mirrors to the head that houses the focus lens. The beam diameter at the far end is dependent on the length of the beam but, in the case of the typical laser engraver, is about 0.24″. In the far field, the beam begins to diverge. ![]() The section of the beam nearest the coupler is very coherent and parallel. Some of the light escapes through this mirror. ![]() Typically one of the two mirrors, the output coupler, is partially transparent. Light bounces back and forth between the mirrors, passing through the gain medium and being amplified each time. The most common type of laser uses feedback from an optical cavity with a pair of mirrors on either end of the gain medium. Pump light may be provided by a flash lamp or by another laser. The energy is typically supplied as an electric current or as light at a different wavelength. Light of a specific wavelength that passes through the gain medium is amplified.įor the gain medium to amplify light, it needs to be supplied with energy in a process called pumping. The gain medium is a material with properties that allow it to amplify light by way of stimulated emission. There will be more advanced articles generated at a future time.Ī laser consists of a gain medium, a mechanism to energize it, and something to provide optical feedback. If you feel unwell, seek medical advice.This article covers a bit of laser theory as well as practical application of the optics systems in a typical gantry CO2 laser.After contact with the skin wash immediately with plenty of water.Do not eat, drink or smoke while working.A scratched or burnt lens must no longer be used!Įxcerpt from the data on the toxicology of Selenium and its compounds:.Always store lenses that have not been used or that have been dismantled in the lens paper provided in the scope of delivery.Do not use cotton gloves, because these are not lint-free. Always wear finger stalls or gloves made of synthetic material.Greasy or dirty hands soil the surface and shorten the service life of the lens. Never touch the optics or lens with your bare fingers.Avoid the material coming to contact with the skin.The particles released in this case can cause serious damage to health. This applies especially to burnt or broken lenses. Handle the ZnSe lens and optical components with extreme care.Always observe the operating instructions for acetone, ZnSE and for the equipment used by the owner.The following precautionary measures must be observed when cleaning the ZnSe lenses: Cleaning and inspection of lenses must only be carried out by appropriately trained personnel and is undertaken at the user’s own risk.In order to guarantee consistent cutting quality, the meniscus lenses used in the optical head of the systems must be inspected daily and cleaned of any visible soiling.Please be aware of your national laws and regulations for the usage of hazardous substances and the instructions in your manual! Do I need any special software to control a eurolaser system?.Can I also cut at a slant with the laser?.How does the way you store acrylic affect the cutting edge?.Which laser classes apply for eurolaser systems?.How does simple compressed air affect the laser cutting process?.Why is the laser source mounted at the height of the bar?.What should be considered when cutting thick acrylic (>20 mm)?.
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