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| Coad | 669650 | Substrate | Borofloat 33 | |
| Type | Metallic Coated Flat Mirror | Diameter(mm) | 25.40 | |
| Clear Aperture | 90% CA | Diameter Tolerance | +0.0/-0.1mm | |
| Parallelism | - | Thickness(mm) | 6.00 | |
| Quantity | 1 | Thickness Tolerance | ±0.3mm | |
| Surface Quality S1 | 20-10 | Wavelength(nm) | 800 - 20000 | |
| Surface Quality S2 | Fine Polishing | AOI(°) | 45 | |
| Inclination Angle | - | Surface Flatness | λ/10@633nm | |
| Laser Damage Threshold | 0.50J/cm2@1550nm，190fs，100Hz，Ø11.47μm (100 Pulses) | Coating Type | Gold Coating (Without Protection Layer) | |
| Coating Specifications | Ravg>96%@800-20000nm,AOI=45° | |||
Metal-coated mirrors are highly suitable for beam deflection in broadband light sources, offering high reflectance across a wide spectral range. LBTEK provides gold-coated flat mirrors with both protective and non-protective layers, available in circular and rectangular shapes.
Gold-coated mirrors with a protective layer are coated with a layer of silicon dioxide to isolate the metal coating from direct contact with external elements, preventing scratches that could affect optical performance. Non-protective gold-coated mirrors offer higher reflectance compared to the protective-coated ones but are more fragile and prone to surface scratches.
LBTEK offers Ø25.4 mm unprotected gold-coated flat mirrors, which are suitable for beam deflection in broadband light sources, providing high reflectance across a wide spectral range. Unlike aluminum and silver coatings, gold coatings are less prone to oxidation in air, allowing them to be used without a protective layer. Unprotected gold-coated mirrors offer higher reflectance than those with a protective layer but are more fragile and prone to surface scratches. During use, extra care should be taken to avoid touching the gold coating surface to prevent scratches that could affect optical performance.
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