11-289 25 x 25mm 50:50 (R:T) N-BK7 Broadband Non-Polarizing Cube Beamsplitter; t=25mm VIS-EXT 400-640nm

The 11-289 is a 25 x 25mm 50:50 (R:T) N-BK7 Broadband Non-Polarizing Cube Beamsplitter, designed and manufactured by Edmund Optics. This beamsplitter is part of their extensive catalog, featuring a cube side of 25mm and a thickness of 25mm, making it a robust and compact solution for various optical applications.

The beamsplitter boasts a 50:50 reflection to transmission ratio, ensuring an equal distribution of light between the reflected and transmitted paths. This ratio is maintained across the broadband wavelength range of 400-640nm, providing versatility in its use within the visible and extended visible spectrum.

The 11-289 is crafted from N-BK7 Schott glass, a material known for its excellent optical properties, including high homogeneity and low auto-fluorescence. This ensures superior light transmission and minimal distortion, contributing to the overall performance and reliability of the beamsplitter.

The beamsplitter's coating is another notable feature. Both the front and back surfaces are coated with an ideal broadband anti-reflective coating, reducing unwanted reflections and increasing transmission. The left and right surfaces also feature this coating, further enhancing the beamsplitter's performance. The hypotenuse faces 1 and 2 are coated with EDM 11-287 and ideal broadband anti-reflective coating, respectively, ensuring optimal light management.