68-420 12.5 x 17.5 mm 80:20 (R:T) N-BK7 Plate Beamsplitter; t=3mm NIR 700-1100nm

This 68-420 Beam Splitter, sourced from Edmund Optics, is a high-quality optical element designed for use in the near-infrared (NIR) spectrum, specifically between 700 and 1100 nanometers. The beamsplitter is rectangular in shape, with dimensions of 12.5 x 17.5 mm, and has a thickness of 3mm.

The beamsplitter is made from N-BK7, a popular optical glass from Schott, which is known for its excellent optical properties and wide transparency range. This material makes the beamsplitter well-suited for a variety of applications, including laser systems, interferometry, and imaging systems.

The beamsplitter features an 80:20 (R:T) split ratio, meaning that approximately 80% of the incident light is reflected, while the remaining 20% is transmitted. This ratio is consistent across the specified NIR wavelength range. The coating on the front surface of the beamsplitter is EDM 68-418, which contributes to its specific reflectance and transmittance characteristics.

The beamsplitter's physical data indicates a reflection of 0.8 and a transmission of 0.2, further confirming its 80:20 split ratio. This beamsplitter is currently in stock, according to the vendor's website, making it readily available for your optical system needs.

For more detailed information, including datasheets and technical drawings, please refer to the vendor's website using the provided weblink.