351-0257-M2P 25 x 25 mm 50:50 (R:T) N-BK7 Non-Polarizing Cube Beamsplitter; t=25 mm 450-700nm

This is a 351-0257-M2P Non-Polarizing Cube Beamsplitter from EKSMA Optics, designed for applications that require broadband, non-polarizing light splitting. The beamsplitter features a 25 x 25 mm aperture and a 25 mm thickness, making it suitable for a wide range of optical systems.

The beamsplitter is made from N-BK7 glass, a popular material for optical components due to its excellent optical properties and high damage threshold. The beamsplitter has a 50:50 reflection-to-transmission ratio, meaning it reflects 50% of the incident light and transmits the remaining 50%. This makes it ideal for applications that require equal distribution of light between two paths.

The beamsplitter's coating is another notable feature. It has an ideal broadband anti-reflective (AR) coating on all surfaces, including the hypotenuse faces. This coating reduces reflection to a minimum, ensuring high transmission and minimal loss of light. The hypotenuse faces are coated with a specialized EKS cubebs 450-700 coating, further enhancing the beamsplitter's performance in the 450-700 nm spectral range.