The BF-ww-25.4-4 is a circular wedge window with a diameter of 25.4 mm and a center thickness of 4 mm. This window is made of BaF2, a material with the Material ID 'baf2 cgdm'. The wedge angle of this component is 0.008726646259971648 radians.
This window is designed for use with a wavelength of 633 nm. It is uncoated, which means it does not have any additional layers applied to its surface to alter its optical properties. The vendor for this product is Alkor Technologies, a well-known provider of optical elements.
The BF-ww-25.4-4 is available for purchase from Alkor Technologies' website, and the link provided indicates that it is currently in stock. This window's geometry, material, and lack of coating make it suitable for a variety of optical applications.