Broadband AR Coating on Germanium

From Andover
Andover produces a non-radioactive dielectric multilayer coating designed to reduce the reflection of Germanium substrates in the infrared. Reflection is reduced from 36% per surface to less than 1% per surface. Constructed of hard, durable first-surface dielectric coatings on optical-quality germanium substrates, these filters will withstand cleaning and handling associated with any high-quality optical component. For your convenience and economy, we offer the filters in two standard sizes: 25 mm and 50 mm dia. However, we can produce custom sizes and shapes, as well as custom optical characteristics. Contact our expert on the right for a quotation.Features
  • Reduces reflection from 36% to 1% per surface
  • Constructed of hard, durable and non-radioactive materials
  • Meets MIL-C-48497

Specification

General Specifications
Thickness1.0±0.2 mm
Diameter Tolerance+0/-0.1 mm
Min. Clear Aperture90% of outside dimension
Substrate MaterialGermanium (other substrates available
Flatness2 waves at 632.8 nm
Parallelism< 10 arc minutes
Sufrace Quality60/40 per MIL-C-48497A
Coating Quality60/40 per MIL-C-48497A
24-hour humidityper MIL-C-48497A
Moderate Abrasionper MIL-C-48497A
Adhesionper MIL-C-48497A
Operating Temperature-62°C to +71°C
MechanicalUnmounted
OptionalMounted in threaded ring
AR Coating25 mm Ø50 mm Ø
3-5 µm coated Germanium WindowGEBBAR-3-5-25GEBBAR-3-5-50
8-12 µm coated Germanium WindowGEBBAR-8-12-25GEBBAR-8-12-50
8-14 µm coated Germanium WindowGEBBAR-8-14-25GEBBAR-8-14-50
2-14 µm coated Germanium WindowGEBBAR-2-14-25GEBBAR-2-14-50

Applications

Thermal Imaging
Detector Windows
Dewar Windows

Contact

Julien Dumouchel
Julien Dumouchel

Contact

Quantum Design AG

Route du Roule 41
CH-1723 Marly
Switzerland

Phone:+41 21 8699-033
E-Mail:switzerland@qd-europe.com
Cookie notice Cookies help us in providing our services. By using our services, you agree to the use of cookies. Privacy policy
Julien DumouchelSales Manager
+41 21 8699033
dumouchel@qd-europe.com