This is the GE-W-38.1-4, a 38.1 mm diameter Germanium Flat Window with a thickness of 4mm, uncoated. The window is sourced from Alkor Technologies, a reputable vendor in the optical industry.
The GE-W-38.1-4 is a window type optical element, specifically a Flat Window, designed with a Circular base shape. It is made from Germanium Burnett, a material known for its excellent optical properties, particularly in the infrared region of the spectrum. The window is designed to transmit light at a wavelength of 10600 nanometers.
The window features a Thin Lens shape, making it suitable for a wide range of optical applications. It is uncoated, meaning it does not have any additional layers applied to its surface to alter its optical properties. This can be beneficial in certain applications where the natural properties of Germanium are desired.
For more information about this product, including its availability and pricing, please refer to the vendor's website at http://www.alkor.net/germanium_windows_catalog.html.