Germanium windows are ideal for IR applications at a broad range of wavelengths, including use in lower power CO2 lasers. Germanium also has low dispersion, ideal for imaging applications. The windows feature an AR coating providing high transmission from 3 to 12 µm.
10GE20: central 85% of diameter GEW: central 90% of diameter
Diameter Tolerance
10GE20: ±0.2 mm GEW: +0.0/-0.1 mm
Thermal Expansion Coefficient
6.1 x 10-6 K-1 @ 298 K
Thermal Limit
59 W m-1 K-1 @ 293 K
Features
3 to 12 µm Broadband Coating
The AR.20 broadband anti-reflection coating offered with our Germanium parallel windows is effective from 3 µm to 12 µm.
Germanium Optical Properties
Germanium Optical Windows have good transmittance from 2 to 16 µm uncoated, and very low peak absorption, making the material an excellent candidate for use in C02 laser cavities. Germanium also has high opacity across the entire visible spectrum, making the windows ideal for applications where transmission of only IR wavelengths is desired.
In order to provide better service and products, please provide the following brief information.
Password Reset
Enter your email address below to reset your account password.
Password Reset
Email Verification Required
Cart Items Updated
Remove Product
Remove this product from your comparison list?
Check Order Status
Provide an order number and postal code to check the status of an order or download an invoice for an order that has shipped. Login to view your complete order history.
Sign In Required
To access this and other valuable technical resources, please sign in or register for a new online account.
Over 8,000 products in-stock! & FREE 2-Day shipping on all web orders!* Learn More FREE T-Shirt with orders $250+ Details
Ultra-High Velocity 