This is the GE-W-10-1, a 10 mm diameter Germanium Flat Window with a thickness of 1mm, sourced from Alkor Technologies. The item is a circular, thin lens type window, designed for use in optical systems that require Germanium as a material.
Germanium, denoted as "germanium burnett" in the Material ID, is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard, grayish-white metalloid, chemically similar to silicon and tin, and is primarily used in semiconductctor devices due to its properties as a semiconductor.
The GE-W-10-1 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.
The window is designed for use at a wavelength of 10600, making it suitable for a range of optical systems and applications. It is currently in stock and available for purchase, as indicated by its weblink status.
For more information, please refer to the vendor's website at http://www.alkor.net/germanium_windows_catalog.html.