The BF-W-25.4-5 is a circular, flat window with a diameter of 25.4 mm and a thickness of 5 mm. This window is made of BaF2 (Barium Fluoride), a material with the ID 'baf2 cgdm'.
BaF2 is a popular material in optical applications due to its wide transparency range, extending from the ultraviolet to the infrared region. It has a high refractive index and a low dispersion, making it an excellent choice for broadband antireflection coatings.
This particular window 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 the material are desired.
The window is sourced from Alkor Technologies, a reputable vendor in the optical industry. According to the vendor's website, the window is currently in stock, indicating its availability for immediate purchase and use.
For more information about this product, please refer to the vendor's website at 'http://www.alkor.net/BaF2_windows_catalog.html'.