Mirrors Page

CVI Mirrors are used for beam routing, alignment, and sampling, as well as for laser cavities. At CVI Laser Optics, we understand the performance demanded of laser mirrors: low scatter, excellent surface figure, high laser damage threshold, and reliability. We have mirrors for every typical laser application available off the shelf, including partial and high reflectivity mirrors coated on flat and curved substrates for use at single, dual, or broadband wavelengths. Our diverse coating technology enables performance at wavelengths from 190 – 2000 nm, and includes e-beam dielectric, ion beam sputtering, high density aluminum, silver, and gold, and our highly reflective MAXBRIte™ broadband mirror coating. Blank substrates in different shapes are also available.

There are so many options, in fact, that we offer many of our mirrors in a semi-custom format, where you choose the wavelength, diameter, angle of incidence, and sometimes even the curvature. This allows you to find the perfect fit on a short lead time for common applications like Nd:YAG, Ti:sapphire, fiber and diode lasers, as well as laser line and partially reflecting mirrors.

In addition to catalog and semi-custom mirrors, we also work regularly with OEM customers to create custom mirrors specifically for their systems. Shape, dimensions, substrate material, and radius of curvature can all be customized. Any of our robust, high performance coatings can be applied at your choice of wavelength and angle of incidence, or we can design a coating to fit your exact spectral needs. With mirrors capable of withstanding as high as 40 J/cm2 of pulsed power at 1064 nm, and over 40 years of experience in designing and manufacturing laser optics, we can create the right mirror for you.


Standard Custom Options
  • Narrowband partial reflecting
  • Narrowband laser line
  • Dual band laser line
  • Diode pumped resonator
  • Broadband
  • Metal coated
  • Blanks
Cylinders, prisms, and other custom shapes
Materials N-BK7, UV-grade fused silica, zerodur MgF2, CaF2, Suprasil 1, optical crown glass, Infrasil 301, N-BAK1, zerodur, silicon
Diameter 12.7 to 101.6 mm 3 to 300 mm
Radius of curvature Concave: 0.075 – 5.00 m
Convex: 0.50 – 1.00 m
Other radii
Angle of incidence 0°, 45° Other AOI’s
  • Partial reflecting, 30% to 99%
  • Laser line
  • Dual wavelength (hi/hi or hi/lo Rx)
  • MAXBRIte™ broadband reflective
  • e-beam dielectric
  • Ion beam sputtered
  • Vacuum UV aluminum
  • Protected silver gold
  • Ultralow GDD
  • Custom reflectivity, 10% to 99%
  • Superpolished cavity mirrors
  • Other wavelengths (193 - 2100 nm)
  • Other angles of incidence
  • Ultra-high damage threshold
Quality Laser quality See manufacturing tolerances below

Mirror Manufacturing Capabilities**

Surface Tolerances Precision Laser Quality High Precision
Surface Quality (scratch - dig) 40 - 20 10 - 5 5 - 2
Surface roughness (Å, RMS) 20 5 1
Surface Figure (P-V @ 633 nm before coating) λ/2 λ/10 λ/25
Dimensional Tolerances Commercial Precision High Precision
Diameter (mm) +0.000 / -0.250 +0.000 / -0.100 +0.000 / -0.010
Length & width (mm) ± 0.050 +0.000 / -0.125 +0.000 / -0.010
Thickness (mm) ± 0.250 ± 0.100 ± 0.010
Angular deviation < 5 arc min ≤ 1 arc sec ≤ 0.5 arc sec
Centration (ETV, mm) 0.05 0.01 0.005
Clear Aperture ≥ 85% ≥ 90% ≥ 95%
Spherical Tolerances Commercial Precision High Precision
Spherical irregularity (P-V @ 633 nm before coating) λ/2 λ/5 λ/100
Spherical radius (fringes) 5 3 0.5

** Note: The general tolerance specifications above are intended to guide determination of appropriate tolerances based both on relative cost and manufacturability. Part-specific tolerances will vary depending on size, material, shape and aspect ratio. Tighter tolerances may be possible, so please contact us to discuss your custom specifications. All specifications do not need to be from a single column, though trade-offs may be required in order to meet the desired combination of cost and performance.