The coatings of our SEA-UV protected aluminum broadband front surface mirrors are consisting of a metallic aluminum layer and a very thin, protective SiO2 (quartz) overcoating. This protective quartz layer has two functions. Unprotected bare aluminum metal coatings oxidize quickly when exposed to oxygen. Also, they are very sensitive to scratching. The protective quartz layer prevents oxidization and makes the mirrors more scratch resistant. Compared to the soft and sensitive unprotected bare aluminum metal coatings, our protected aluminum coatings are harder, more durable and more resistant to scratches. However, they are still more scratch sensitive than our SEA-VIS enhanced aluminum mirrors, which for physical reasons can have a much thicker and protective multilayer dielectric over coating on top of the aluminum coating. Due to the great UV-transmittance and to the very low absorption of the very thin SiO2 layer within the UV-wavelength range, the desired high ultraviolet reflection of the metallic aluminium coating is retained. So the SEA-UV mirror coatings are often used as ultraviolet mirror optics and as broadband mirrors.
Aluminum mirror coatings are not as strongly angle dependent as dielectric coatings are and feature a high optical reflection through the ultraviolet to the infrared light range. Only close to the range around 700-870 nm there is a small reflection drop down to slightly below 80 %. The mirror optics can be used as multiple wavelength laser mirrors for very different wavelengths at the same time. For example they can reflect an invisible ultraviolet laser beam while reflecting a visible or infrared laser beam as well. By adding additional thin dielectric coatings, the reflectivity of our protected aluminum front surface mirrors can be modified and increased for a special wavelength or particular optical reflection ranges. Please use our custom coating request form to conveniently request a quotation for your customized protected aluminum mirrors. Please contact us if you need additional information or technical support.
You might wonder, why we don't have standard sized mirrors and that we do not provide a shopping cart? We are not limited to a few fix sized optics like most trading companies are. We are specialized in quick turnaround for custom sized mirrors to supply the best possible support to our customers. Hence, our delivery time even for optics with custom dimensions at large quantities based on any of our coatings made regularly is usually less than a week. This is quicker than most re-sellers can be with their fixed size stock mirrors and it is of great advantage that the size of the optics perfectly fits your application. So no shopping cart is necessary at all.
To quickly get a quote for our SEA-UV protected aluminium front surface mirrors with custom dimensions, please click the button below:
48-h Express Optics Service available
In case you need mirror optics solely in the visible wavelength range, pleae take a look at our SEA-VIS enhanced aluminum front surface mirror, which is optimized for higher VIS reflection. For the near infrared, we make the SEA-NIR mirrors which are enhanced and optimized for NIR-reflectivity.
reflection curve of our SEA-UV
All given details and specifications are mean reference values and are not guaranteed. In addition, please consider our "Notes on technical specifications"