10B20BS.3 25.4 mm Dia. 50:50 (R:T) N-BK7 Broadband Dielectric Plate Beamsplitter; t=6.1mm 1290-1580nm

This is a 10B20BS.3 Beam Splitter, a high-quality optical component manufactured by MKS/Newport. The beamsplitter has a circular geometry with a diameter of 25.4 mm and a thickness of 6.1 mm, making it suitable for a wide range of optical applications.

The beamsplitter is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and high homogeneity. The front surface of the beamsplitter is coated with a new BS.3 coating, while the back surface is coated with a new NC.3 coating. These coatings ensure high reflectivity and transmissivity across the beamsplitter's operational wavelength range of 1290-1580 nm.

Specifically, the beamsplitter provides a 50:50 (R:T) split ratio, meaning it reflects 50% of the incident light and transmits the remaining 50%. This makes it an ideal choice for applications that require equal distribution of light, such as interferometry, holography, and beam combining.

The beamsplitter is available in stock and can be purchased directly from the vendor's website. For more information, please refer to the provided weblink.