Custom Fused Silica Mirrors for High-Power Laser Applications
Avantier’s fused silica mirrors are engineered for demanding laser system applications, offering exceptional performance in terms of surface quality, thermal stability, and damage threshold. Designed for use with YAG lasers and other high-power systems, our silica mirrors are optimized for precision and durability.
Substrate Material
Our optic mirrors are manufactured from Corning 7980 fused silica or equivalent high-purity, industrial-grade fused silica substrates. These materials are chosen for their ultra-low thermal expansion, high laser damage threshold, and excellent resistance to environmental stress. We also offer UV fused silica mirrors for enhanced transmission and reflectivity in ultraviolet wavelength ranges.
Dimensions & Tolerances
Diameter range | Ø 7 mm – 410 mm |
Tolerance: Diameter | ±0.254 mm |
Tolerance: Thickness | ±0.254 mm |
Shapes and sizes | Custom available upon request |
These mirrors can be engineered for specific angles of incidence, including standard configurations such as 45 degrees.
Surface Accuracy & Quality
Surface flatness | Standard λ/4 @ 633 nm; High-precision options up to λ/10 or λ/20 |
Surface quality | 60/40 or laser-grade 10-5 scratch dig |
Clear aperture | >90% of the diameter |
Designed for minimal wavefront distortion, ideal for laser lines at 1064 nm and other critical wavelengths
Coating Design & Specifications
Our custom coated fused silica mirrors are available with a wide selection of metal and dielectric coatings. Each coating is engineered for specific laser system demands and optimized wavelength ranges. Coating Options:
Coating Type |
Description |
Wavelength Range |
Aluminum (AlSiO) |
Bare or protected, enhanced for visible/UV applications |
UV to Visible |
Gold |
Bare or protected, with high IR reflectivity |
Infrared |
Silver |
Protected silver, broadband performance |
>400 nm |
Dielectric |
High-reflectivity, laser line coatings with high damage threshold |
Narrowband or broadband (e.g., 320–450 nm, 750–1100 nm, 1064 nm) |
Applications
- Laser machining
- Beam delivery systems
- Scientific instrumentation
- Medical lasers
- Industrial optics.
Why Choose Avantier’s Silica Mirrors?
- Built with high-purity fused silica substrates
- High surface accuracy and premium scratch dig specifications
- Designed for use in YAG laser and high-power laser systems
- Coatings engineered for durability at standard angles of incidence
- Available in large formats with tight mechanical tolerances
- Ideal for 1064 nm, 45-degree AOI, and multi-line laser systems
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