14-642 20 x 20 mm 50:50 (R:T) N-BK7 Standard Cube Beamsplitter; t=20mm 700-1100nm

The 14-642 is a standard cube beamsplitter from Edmund Optics, designed for use in the near-infrared (NIR) spectrum. This beamsplitter is a 20mm cubic element with a thickness of 20mm, making it suitable for a wide range of optical applications.

The beamsplitter features a 50:50 reflection-to-transmission ratio, meaning it evenly splits incoming light between its reflected and transmitted paths. The reflection and transmission coefficients are both 0.5, ensuring a balanced distribution of light.

The 14-642 is made from N-BK7, a high-quality borosilicate glass commonly used in optical systems due to its excellent optical properties. This material is known for its low autofluorescence, making it ideal for applications where minimal background noise is crucial.

The beamsplitter's coating is another notable feature. Both the front and back surfaces are coated with ideal broadband anti-reflection (AR) coatings, reducing surface reflections and improving transmission. The left and right surfaces also have ideal broadband AR coatings, further enhancing the beamsplitter's performance.

The hypotenuse faces of the beamsplitter are coated differently. Hypotenuse 1 features an EDM NIR R50 T50 coating, designed for 50% reflection and 50% transmission in the NIR range. Hypotenuse 2, on the other hand, is coated with an ideal broadband AR coating, similar to the other surfaces.

This beamsplitter is designed to operate within the wavelength range of 700-1100nm, making it suitable for a variety of NIR applications. Its 'BS Cube' shape ensures robustness and ease of integration into optical systems.