The SI-W-38.1-5 is a circular flat window, sourced from Alkor Technologies, with a diameter of 38.1 mm and a thickness of 5 mm. This window is made of silicon, specifically identified as "silicon sal vil 1957" in the Material ID.
The window is designed in the shape of a thin lens, making it suitable for various optical applications. The wavelength of this window is 633 nm, indicating its potential use in red light-based systems.
Notably, this window is uncoated, meaning it does not have any additional layers to enhance or alter its optical properties. This could be beneficial in applications where maintaining the original optical properties of the silicon is crucial.
For more information about this product, including its availability and other potential applications, you can refer to the vendor's website at http://www.alkor.net/Silicon_windows.html.