NPCH-20-4050 20 x 20 mm 50:50 (R:T) N-BK7 Non-polarizing Cube Beamsplitter; t=20mm 405nm

The NPCH-20-4050 is a non-polarizing cube beamsplitter offered by OptoSigma, designed for use in optical systems that require beam splitting. This beamsplitter features a 20 x 20 mm aperture and is designed to operate at a wavelength of 405nm.

The beamsplitter is constructed from N-BK7 Schott glass, a popular material for optical components due to its excellent optical properties and wide transmission range. The beamsplitter is coated with ideal broadband AR on all surfaces, ensuring high transmission and low reflection across the spectral range.

The beamsplitter features a 50:50 beam splitting ratio, meaning that approximately half of the incident light is reflected while the other half is transmitted. This makes it suitable for applications where equal distribution of light is required.

The beamsplitter is designed in a cube geometry, with dimensions of 20mm x 20mm x 20mm, making it compatible with standard optical mounts. The hypotenuse faces are coated with an Opt NPCH-4050 coating on one face and ideal broadband AR on the other, providing optimal performance at the specified wavelength.