68-553 35 x 35mm 30:70 (R:T) N-BK7 Standard Cube Beamsplitter; t=35mm 400-700nm

The 68-553 is a standard cube beamsplitter offered by Edmund Optics, designed for use in the 400-700nm wavelength range. This beamsplitter is characterized by its 35mm x 35mm geometry, with a thickness of 35mm, making it suitable for a wide range of optical applications.

The beamsplitter features a 30:70 (R:T) split ratio, meaning that it reflects 30% of the incident light and transmits 70%. This ratio is consistent across the entire specified wavelength range, ensuring predictable and reliable performance. The beamsplitter is constructed from N-BK7 glass, a common and versatile material in optical systems due to its excellent optical properties and availability.

The coating on the beamsplitter is a standard MgF2 coating, which is applied to all surfaces, including the front, back, left, right, and two hypotenuse surfaces. This coating is designed to enhance the performance of the beamsplitter by reducing reflection and improving transmission.

The beamsplitter is available in a cube shape, which is a common and convenient form factor for many optical systems. This shape allows for easy integration into existing setups and provides a robust and stable platform for the beamsplitter.