NPCH-20-10640 20 x 20 mm 50:50 (R:T) N-BK7 Non-polarizing Cube Beamsplitter; t=20mm 1064nm

OptoSigma's NPCH-20-10640 is a non-polarizing cube beamsplitter, designed for use in various optical systems. This beamsplitter is a 20 x 20 mm cube, with each face measuring 20 mm, making it suitable for applications requiring a compact, robust optical component.

The beamsplitter is designed to operate at a wavelength of 1064 nm, with a 50:50 reflection-to-transmission ratio. This means that approximately half of the incident light will be reflected, while the other half will be transmitted. This feature makes it ideal for applications requiring balanced light distribution, such as interferometry, beam combining, or splitting.

The beamsplitter is made from N-BK7, a high-quality borosilicate glass known for its excellent optical properties. This material ensures high transmittance, low auto-fluorescence, and excellent environmental stability. The beamsplitter's coating further enhances its performance. Both the front and back surfaces are coated with ideal broadband anti-reflection (AR) coating, reducing unwanted reflections and increasing the overall transmission of the component.

The hypotenuse faces of the beamsplitter are also coated. The first hypotenuse face is coated with an Opt NPCH-10640 coating, specifically designed for this beamsplitter model. The second hypotenuse face is coated with an ideal broadband AR coating, providing additional protection and enhancing the beamsplitter's performance.