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Elliptical Broadband Metallic Mirrors
Elliptical Broadband Metallic Mirrors
Metallic coated elliptical mirrors are excellent general purpose, broadband reflectors for 45° beam routing applications.
- Excellent general purpose broadband reflectors
- Ideal for 45° beam routing applications
- N-BK7 or Borofloat® 33 substrates
- Broader bandwidth and less expensive than dielectric coatings
- Four metallic coatings covering the UV to IR bands See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 10E20AL.2Elliptical Mirror, UV Aluminum, N-BK7, 25.4 mm x 35.9 mm, λ/10, 250-600 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 10E20ER.1Elliptical Mirror, Aluminum, N-BK7, 25.4 mm x 35.9 mm, λ/10, 450-700 nm | |||||
| 10E20ER.2Elliptical Mirror, Silver, N-BK7, 25.4 mm x 35.9 mm, λ/10, 480-20,000 nm | 4 Weeks FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
 | 10E20ER.4Elliptical Mirror, Gold, N-BK7, 25.4 mm x 35.9 mm, λ/10, 650-20,000 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 13E20AL.2Elliptical Mirror, UV Aluminum, Borofloat, 33 mm x 46.7 mm, λ/10, 250-600 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 13E20ER.1Elliptical Mirror, Aluminum, Borofloat, 33 mm x 46.7 mm, λ/10, 450-700 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 13E20ER.2Elliptical Mirror, Silver, Borofloat, 33 mm x 46.7 mm, λ/10, 480-20,000 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 13E20ER.4Elliptical Mirror, Gold, Borofloat, 33 mm x 46.7 mm, λ/10, 650-20,000 nm | In Stock | ||||
| 18E20AL.2Elliptical Mirror, UV Aluminum, Borofloat, 46.7 x 66 mm, λ/10, 250-600 nm | In Stock FREE 2-day shipping on thousands of products on Newport.com Learn More | ||||
| 18E20ER.1Elliptical Mirror, Aluminum, Borofloat, 46.7 x 66 mm, λ/10, 450-700 nm | In Stock |
Specifications
- Wavelength Range250-600 nm, 450-700 nm, 480-20000 nm
- Mirror ShapeElliptical
- Mirror Size25.4 x 35.9 mm, 46.7 x 33.0 mm, 66.0 x 46.7 mm
- Thickness6.0 mm, 9.4 mm, 12.5 mm
- MaterialN-BK7 or Borofloat 33
- Surface Flatnessλ/10 at 632.8 nm
- Angle of Incidence0-45°
- Clear Aperture≥ central 80% of diameter
- Thickness Tolerance±0.2 mm, ±0.25 mm
- Chamfers Angle Tolerance45° ±15°
- Cleaning
Features
Capture the Full Beam Diameter at 45° Routing
Prevention of beam clipping is important in beam steering applications with larger beam diameters. Circular mirrors mounted at 45° cannot maintain a circular profile and may result in portions of the beam not being reflected. The solution is to mount elliptical mirrors at a 45° angle – presenting a circular profile to an incoming beam – with Newport's Large Diameter Periscope Mounts and 1.5 inch Gear Rack Support Rods.
670-RCT mount (top), 670-RCB mount (bottom), model 70 gear rack support rod, and two elliptical mirrors in a periscope application.
Enhanced Aluminum UV Coating
Our AL.2 UV enhanced aluminum coating is a durable, broadband UV reflector with average reflectivity greater than 90% from 250 – 600 nm. The aluminum film is overcoated with UV transparent magnesium fluoride to prevent oxidation of the metal.
Enhanced Aluminum VIS-NIR Coating
Our ER.1 enhanced aluminum coating may be used wherever a broadband visible and near infrared reflector is needed. A multilayer dielectric stack deposited over the aluminum film boosts reflectance and improves the durability of the coating. Average reflectivity is greater than 93% from 450-700 nm.
Protected Silver VIS-IR Coating
Our 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. Average reflectivity is greater than 96% from 480 – 1100 nm and greater than 98.5% from 1.1 – 20 µm. This silver mirror is a favorite for Ultrafast scientists who want an inexpensive option.
Protected Gold NIR-IR Coating
Our ER.4 protected gold coating is ideal for applications requiring broadband reflectance in the near IR to the far IR. A multilayer dielectric overcoat provides protection to the gold from the environment. Average reflectivity is greater than 96% from 650 – 1700 nm and greater than 98% from 1.7 – 2.0 µm.
Durable Substrates
Elliptical Broadband Metallic Mirrors are available with N-BK 7 or Borofloat® 33 substrates. BK 7 is a borosilicate crown glass used for visible and near infrared optics. It offers high homogeneity, low bubble and inclusion content and is relatively hard with good scratch resistance. Borofloat is borosilicate glass with a low coefficient of thermal expansion. It is mainly used for non-transmissive optics, such as mirrors, due to its low homogeneity and high bubble content. Please see the Optical Materials Technical Note for more details.