High Quality Optical Ge Windows with Ar Coated: 7-12 Um

Product Name: High Quality Optical Ge Windows with Ar Coated: 7-12 Um Model NO.: Finewin Coating: Ar Coating Customized: Customized Lenses Color: Blue Material: Optical Glass Shape: Single-lens Transmittance: 90%-95% Type: Ge Windows Usage: Optical, Photography Grade: Optical Trademark: FineWin Transport Package: Carton Specification: customized Origin: China Product Description Product DescriptionDue to its broad transmission range and opacity in the visible portion of the spectrum, germanium is well suited for IR laser applications. Germanium also acts as a longpass filter for wavelengths greater than 2 µm. In addition, germanium is inert to air, water, alkalis, and many acids. Germanium's transmission properties are highly temperature sensitive; in fact, the absorption becomes so large that germanium is nearly opaque at 100 °C and completely non-transmissive at 200 °C.When handling optics, always wear gloves. This is especially true when working with germanium, as dust from the material is hazardous. For your safety, please follow all proper precautions, including wearing gloves when handling these windows and thoroughly washing your hands afterward.We also offers precision windows fabricated from several other substrates for use in a large variety of laser and industrial applications. We also offer laser windows, which have AR coatings centered around commonly used laser wavelengths, and Brewster windows, which are designed to eliminate P-polarized reflected light.Diameter1" (25.4 mm)Diameter Tolerance+0.0 / -0.2 mmThickness5.0 mmThickness Tolerance±0.1 mmClear Aperture≥Ø22.86 mmParallelism≤1 arcminSurface Flatness≤λ over Clear ApertureSurface Quality40-20 Scratch-DigAR Coating Range7 - 12 µm (-G Coating)Reflectance over AR Coating RangeRavg < 1%Damage Threshold0.5 J/cm2 (10.6 µm, 100 ns, 1 Hz, Ø0.478 mm)Reflectance DataPlease see the picture A belowTransmission DataPlease see the picture B below