BK7-BSP-25.4-400-700-30:70 25.4 mm Dia. N-BK7 70:30 (R:T) Broadband Plate Beamsplitter; t=3mm 400-700nm

This BK7-BSP-25.4-400-700-30:70 Beam Splitter, sourced from Simtrum, is a high-quality optical component designed for broadband applications. It features a circular geometry with a diameter of 25.4 mm and a thickness of 3 mm, making it suitable for a wide range of optical systems.

The beamsplitter is made from N-BK7 Schott, a popular borosilicate crown glass known for its excellent optical properties. This material ensures high transmittance and low dispersion across the visible spectrum, making it ideal for broadband applications.

The coating on the front surface of the beamsplitter is Sim Bs307040070045, a proprietary coating developed by Simtrum. This coating is designed to provide a 70:30 (R:T) split ratio at a central wavelength of 588 nm, within the operational wavelength range of 400-700 nm. This split ratio is commonly used in various optical applications, including interferometry, beam combining, and imaging systems.

The beamsplitter's physical data indicates a reflection of 0.7 and a transmission of 0.3, consistent with the specified split ratio. This ratio remains constant across the entire operational wavelength range, ensuring consistent performance in various lighting conditions.