Intended for the fundamental and second harmonic of Ytterbium (Yb) doped lasers, these mirrors reflect over 99.5% from 505-530 nm and/or 1020-1050 nm. They feature a proprietary low-Group Delay Dispersion (GDD) coating. Designed to steer ultrashort pulses at 45° AOI with minimal effect on pulse dispersion, these mirrors are ideal for use with Spectra-Physics ultrafast lasers such as the Spirit® high power femtosecond laser.
| Compare | Model | Drawings, CAD & Specs | Availability | Price | |||
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Low GDD Mirror, Ytterbium Laser, 45° AOI, 25.4 mm, 505-530 nm and 1020-1050 nm
$323
In Stock
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10QM20UF.DF55 Low GDD Mirror, Ytterbium Laser, 45° AOI, 25.4 mm, 505-530 nm and 1020-1050 nm |
In Stock
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$323 |
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10QM20UF.F15 Low GDD Mirror, Ytterbium Laser, 45° AOI, 25.4 mm, 1020-1050 nm | $271 |
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10QM20UF.F55 Low GDD Mirror, Ytterbium Laser, 45° AOI, 25.4 mm, 505-530 nm |
In Stock
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$228 |
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| Wavelength Range | 505-530 nm & 1020-1050 nm | 1020-1050 nm | 505-530 nm | |
| Angle of Incidence | 45° | 45° | 45° | |
| Reflectivity | R > 99.5% @ 505-530 nm & 1020-1050 nm | Rp, Rs > 99.5% @ 1020-1050 nm | Rp, Rs > 99.5% @ 505-530 nm | |
| Material | Fused Silica | UV Grade Fused Silica | UV Grade Fused Silica | |
| Mirror Shape | Round | Round | Round | |
| Surface Flatness | λ/10 at 632.8 nm | λ/10 at 632.8 nm | λ/10 at 632.8 nm | |
| Surface Quality | 20-10 scratch-dig | 10-5 scratch-dig | 10-5 scratch-dig | |
| Back Surface | Commercial Polished | Commercial Polished | Commercial Polished | |
| Thickness | 6.0 mm | 6.35 mm | 6.35 mm | |
| Thickness Tolerance | ±0.5 mm | ±0.5 mm | ±0.5 mm | |
| Diameter | 25.4 mm | 25.4 mm | 25.4 mm | |
| Diameter Tolerance | +0/-0.3 mm | +0/-0.25 mm | +0/-0.25 mm | |
| Wedge | < 30 arc sec | ≤ 3 arc min | ≤ 3 arc min | |
| Clear Aperture | ≥central 80% of diameter | ≥central 80% of diameter | ≥central 80% of diameter | |
| Chamfers | 0.25–0.75 mm face width | 0.25–0.75 mm face width | 0.25–0.75 mm face width | |
| Chamfers Angle Tolerance | 45° ±15° | 45° ±15° | 45° ±15° | |
| Cleaning | See How to Clean Optics | See How to Clean Optics | See How to Clean Optics |
There are many types of Ytterbium doped lasers ranging from the compact fiber lasers to high performance femtosecond lasers such as the Spirit® laser from Spectra-Physics. Applications include ablation, cutting, drilling, welding, marking, laser sintering, and eye surgery.
High reflectivities are offered for popular Ytterbium wavelengths. The 10QM20UF.F15 and 10QM20UF.F55 offer Rs, Rp > 99.5% for 1020-1050 nm or 505-530 nm, respectively. All mirrors are made from high quality fused silica with multilayer dielectric coatings.
The 10QM20UF.DF55, is a dual wavelength mirror reflecting both the fundamental and second harmonic. This mirror offers an average reflectivity (S+P)/2 polarization > 99.5%. All mirrors are made from high quality fused silica with multilayer dielectric coatings.
Fused Silica is synthetic amorphous silicon dioxide of extremely high purity. This non-crystalline, colorless silica glass combines a low content of inclusions with high refractive index homogeneity, a very low thermal expansion coefficient, and excellent transmittance in the wavelength regime from UV to NIR. As a result, these mirrors will perform better with temperature fluctuations and is ideal for high-energy laser applications due to its high energy damage threshold. For more information, please see our Optical Materials technical note.
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