Silver Mirror, Zerodur, 25.4 mm, λ/20, 480-20,000 nm
Silver Mirror, Zerodur, 25.4 mm, λ/20, 480-20,000 nm
Model: 10Z40ER.2
Product Series Overview
High-Performance Zerodur Metallic MirrorsThe 10Z40ER.2 Broadband Silver Mirror is an excellent general purpose, broadband reflector. This 25.4 mm (1.0 inch) diameter mirror is made from a 6.0 mm thick Zerodur substrate. Zerodur, a glass-ceramic material, exhibits nominally zero thermal expansion which provides extra stability for applications requiring diffraction limited performance. The ER.2 protected silver coating is composed of a low emissivity silver film fully encapsulated by a multilayer dielectric stack to prevent oxidation. This coating has excellent broadband reflectivity in the IR, while maintaining very good performance in the visible and near IR. The 10Z40ER.2 has an average reflectivity greater than 96% from 480-1100 nm and greater than 98.5% from 1.1-20 µm. This mirror has a λ/20 surface flatness and a 10-2 surface quality.
Specifications
- Wavelength RegionBroadband
- Wavelength Range480-20000 nm
- Mirror ShapeRound
- Diameter25.4 mm
- Mirror SizeØ25.4 mm
- Thickness6.0 mm
- MaterialZerodur® or equivalent
- Coating TypeProtected Silver
- Coating CodeER.2
- Surface Quality10-2 scratch-dig
- Surface Flatnessλ/20 at 632.8 nm
- Angle of Incidence0-45°
- Clear Aperture≥central 80% of diameter
- Back SurfaceGround
- ReflectivityRavg>96%, Rmin>93% @ 480-1100 nm;Ravg>98.5%, Rmin>97% @ 1.1-20 µm
- Damage Threshold1 J/cm² with 10 ns pulses at 1064 nm, 20Hz
- Diameter Tolerance+0/-0.13 mm
- Thickness Tolerance±0.25 mm
- Chamfers0.25–0.76 mm face width
- Chamfers Angle Tolerance45° ±15°
- Cleaning
Resources & Downloads
3D Product Models
Other
10Z40ER.2 RoHS Certificate(265.2 kB, PDF) 10Z40ER.2_ROHS2-2021.pdf(281.1 kB, PDF) ER.2 Raw Data.xlsx(205.4 kB, XLSX)
2D Product Drawings
10Z and 20Z Zerodur Mirror Drawing(103.8 kB, PDF)
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