Opto Sigma

• High reflectance at laser lines in the Ultra-Violet, visible, and NIR
• Polished to λ/10 minimizing subsurface structure
• ≤ 3 arcmin parallelism
• Multilayer dielectric coatings, optimized for design wavelength
• Designed for 45 degree angle of incidence
• Standard diameters from 12.7 to 50.8mm

These laser mirrors are designed for specific wavelength laser applications where low wavefront distortion, low scattering, and high reflectivity are usually important. The reflectance is greater than 99.5% at the specified wavelength. Typically the s-polarization is greater than 99.9% and p-polarization is close to 99.5%.  

Possible surface damage from higher power laser beams is minimized by careful polishing and precisely controlled coating methods.

As with the broadband mirrors, standard diameters are 1/2 inch, 3/4 inch, 1 inch and 2 inches. Other diameters are available on request. Other laser wavelengths can also be provided, so please call.