WBF4000 40 mm Dia. Barium Fluoride Round Window; t=5mm Uncoated

The WBF4000 is a 40 mm diameter Barium Fluoride (BaF2) round window, with a thickness of 5mm, uncoated and sourced from Knight Optical. This window is a flat, circular optical component designed for use in various applications requiring high transmission in the ultraviolet, visible, and infrared spectral regions.

Barium Fluoride is a popular material for optical components due to its excellent transparency across a wide range of wavelengths, including the deep ultraviolet region. It has a refractive index of approximately 1.45 at 589.3 nm and a transmission range of 0.2 to 12 µm, making it suitable for use in various applications such as UV spectroscopy, laser systems, and infrared detection systems.

The window features a thin lens shape, which is designed to minimize optical aberrations and distortions. The uncoated surface ensures high damage threshold and low absorption, but it may have a higher reflectivity compared to coated surfaces. Therefore, it is essential to consider the specific requirements of your application when choosing between coated and uncoated options.

This item is currently in stock and available for immediate shipping. For more information, including detailed specifications and pricing, please refer to the vendor's website using the provided weblink.