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Home » News » How to choose USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens(four)

How to choose USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens(four)

Views:1     Author:Site Editor     Publish Time: 2019-01-18      Origin:Site

     Users who require higher performance, are easier to clean, or have less chemically active USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses than uncoated reflective sheets, must specify a multilayer dielectric reflective mirror. The metal reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens dielectric layer begins with a layer of chromium alloy evaporation which acts as a binder for the next layer. The chrome alloy also prevents the subsequent film from spreading to the substrate. Next, gold or silver is plated on the chrome. At this point, the coated substrate is just a metal mirror. Metal films are now covered by alternating layers of dielectric materials with different coefficients. These dielectric layers have more advantages in performance than uncoated metals. A film layer of suitable thickness enhances the reflectivity of the uncoated metal and makes the USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens more scratch resistant.

    The dielectric film coating on the base metal varies greatly in number and thickness; each coating has a specific reflectance at 10.6 μm. Table 2 shows the reflectance of some commonly used mirror coatings at 10.6 μm. Currently, the most common mirror substrate is silicon, followed by copper. In general, the reflectivity of the reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens layer is directly related to the number of dielectric layers. Therefore, a SSES (highest reflectance silver coated) mirror with a reflectance of 99.8 has more dielectric layers than an ES (enhanced silver) with a reflectivity of 99.6%. The cost of the mirror is also directly related to the number of dielectric layers. This means that reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses with high reflectivity are more expensive. Among many factors, the cost of reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses is highly dependent on the order quantity, size, substrate material and surface curvature. Selecting a cavity laser reflecting USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens. The primary purpose of a laser cavity reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens is to create a light reflection within the cavity to create a stimulated emission. In some lasers, the cavity mirror is placed at a position where the laser beam is incident at an angle of 45 degrees to polarize the beam. In both cases, it is critical for the user to select a reflective USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens to ensure that the laser produces energy at its most appropriate energy level and achieves the desired polarization.

         In high-power CO2 lasers, a lateral laser cavity design is commonly used, using a rotating mirror to reflect the beam multiple times in an active laser medium. The tail mirror combination consists of a 45 degree angle of incidence mirror and a normal incidence angle reflector, usually rotating around the incident optical axis.  Because the tail mirror is located at the normal incidence of the laser beam, the mirror achieves maximum reflectivity and improves laser performance in two ways: reduced cavity optical loss and thermal distortion. It is obvious to reduce the light loss by increasing the reflectance, but reducing the thermal deformation is less obvious. The portion of the laser that is not reflected by the mirror is absorbed by the film layer. Higher reflectance and lower absorption mean less thermal deformation of the USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lens and laser beam. Although bare copper mirrors are sometimes used in laser cavities, most laser manufacturers choose plating-enhanced dielectric film USA Zn se12mm 18mm 19mm 19.05mm 20mm 22mm 25mm 28mm 38 .1mm Co2 laser optical lenses such as ES (enhanced silver) and SES (super-enhanced silver) films.


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