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Zerodur® Mirror Blanks![]()
PF0511 Ø1/2" Mirror Blank PF1011 Ø1" Mirror Blank PF2011 Ø2" Mirror Blank ![]() Please Wait Features
Thorlabs' Zerodur®* mirror blanks are designed to be used as front-surface mirrors when coated. Fabricated from substrate-grade Zerodur, which has an extremely low coefficient of thermal expansion, these mirror blanks offer a high degree of purity and exceptional environmental durability. Zerodur's coefficient of thermal expansion is 0 ± 0.100 x 10-6 /°C, which is significantly smaller than the value for fused silica, 0.55 x 10-6 /°C. This property makes these mirror blanks ideal for high-power systems like CO2 lasers, amplified Ti:sapphire lasers, and industrial machining lasers, as well as other applications that are sensitive to thermally-induced beam drift. Each of these blanks is engraved with part number on the back side. These Zerodur blanks can be coated with our reflective coatings such as broadband dielectric, metallic, or custom coatings. These coatings can provide high reflectivity for ultraviolet through near-infrared wavelengths. Please contact Technical Support for information on coatings and price. For applications that are less sensitive to thermally induced beam drift, Thorlabs also offers a line of fused silica mirror blanks. *Zerodur® is a registered trademark of Schott.
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