The highest rated Glass CO2 laser tube manufacturer is most probably RECI. F ollowed by EFR and SPT with honourable mentions to Tongli and Yongli. Just be aware that RECI’s lowest power laser tube is the W1 @ 75 watts. S o if you have a 60-watt or lower tube, I would suggest trying to specify EFR or SPT. Making sure you have a recognised brand fitted to your machine will save you time and money in the future. 3. Buying a replacement tube: is a permissible temperature, but with it the radiance power decreases, and the resource of this expensive component is spent much faster. That is why laser tubes in laser machines must be equipped with coolant systems. Oh, BTW, helium passes through the walls of those latex balloons really well. The helium content is changing fast after you fill it. It is probably half gone in 12 hours.

This is why it is so important to ensure you are being given the rated power of the tube and not the max power. For example, if we look at the EFR CL800 tube; this is 800mm / 31.5″ long, 50mm / 2″ in diameter, has a rated value of 40 watts and a max power of 50 watts. The tube is only classed as a warranty failure if its output power falls below 32 watts in the warranty period of 180 days. So you believe you are buying a 50-watt machine, yet the laser tube could be outputting as little as 33 watts and still be within the manufacturer’s specification. Let’s not forget the 10~12% loss across the optics, leaving you with just 30 watts at the work surface. This laser equipment accessory features excellent beam quality, small spot, and fast response speed, making it widely used in laser marking machines and engraving machines. EASY TO INSTALL: The preinstalled YL cathode and anode terminal connections with a full metal structure allow safer and faster replacement.Although direct excitation of CO 2 molecules into the upper laser level is possible, it has proven to be most efficient to use a resonant energy transfer from nitrogen molecules. Here, nitrogen molecules are excited by the electric discharge into a metastable vibrational level and transfer their excitation energy to the CO 2 molecules when colliding with them. The exited CO 2 molecules then largely participate in the laser transition. Helium serves both to depopulate the lower laser level and to remove the heat. Other constituents such as hydrogen or water vapor can help (particularly in sealed-tube lasers) to reoxidize carbon monoxide (CO, formed in the discharge) to carbon dioxide. Figure1: Schematic setup of a sealed-tube carbon dioxide laser. The gas tube has Brewster windows and is water-cooled. Spectral Lines As the tube degrades, the power output gradually decreases which leads to the user either increasing the power or slowing the cutting speed. Resulting in the tube running harder or longer than necessary. Some tubes contain a catalyst that recombines the Carbon Monoxide and Oxygen, replenishing the lost CO2, but some of the free oxygen can collect on the cathode (the low voltage end of the tube) giving it a yellow tint. This is how manufacturers can determine if the tube has been overdriven and refuse any warranty claim.

It is vital to provide good cooling, suitable for the power of the laser tube for laser engravers. Freon chiller CW5200 is a good choice to stay independent of the environmental temperature and to control the machine temperature and the water flow. C. Fromentin et al., “Validation of non-equilibrium kinetics in CO 2–N 2 plasmas”, Plasma Sources Sci. Technol. 32, 054004 (2023); https://doi.org/10.1088/1361-6595/acce64 The extra-large 24″ x 12″ work area provides ample room for larger sheet laser cutting, and is larger than the Glowforge, Gweike Cloud Pro, and OMTech Pro. The 2.5” max height is slightly taller than these lasers which have 2”, but I personally bought the riser base accessory which gives you up to 8.5” height, which also makes rotary engraving much easier. Laser beam expander is a lens component that changes the diameter of laser beam and divergence Angle. The laser beam emitted from the laser has a certain divergence angle. For laser processing, a laser beam expander can make the laser beam collimated and obtain a high power density spot after focusing.However, excessive chilling of the water is not usually recommended as the dew point is typically 5C below the ambient temperature. If you chill the water by more than 5C you run the risk of condensation on the glass. Since one end of the tube could be at 15~20KV there is an increased chance of arcing occurring which can damage sensitive electronics if the grounding circuit is not sufficiently robust. Form of gas laser A test target bursts into flame upon irradiation by a continuous-wave kilowatt-level carbon-dioxide laser. A CO2 laser’s size and working area can vary a lot, and also has a big impact on price. The Flux Beamo is one of the smallest and cheapest machines, with a working area of just 300x210mm designed for small projects.