Spectrum Thin Films can design metallic coatings for optical mirrors – laser, flat, metal substrate, focusing, or specialty mirrors in a range of reflective coating options at different regions of the spectrum, including aluminum, silver, gold, or dielectric.

Standard metallic mirror coatings include Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, Protected Gold and Protected Silver.

  • Protected Aluminum and Enhanced Aluminum are typically used for visible applications and IR applications
  • UV Enhanced Aluminum can be used for UV and visible applications down to .193nm
  • Protected Gold offers high reflectance for Infrared or near-Infrared wavelengths.
  • Protected Silver provides the highest reflectance to infrared.



Reflectance vs. wavelength curves for aluminum (Al), silver (Ag), and gold (Au) metal mirrors at normal incidence.