48-389 12.5 mm Dia. 30:70 (R:T) N-BK7 Plate Beamsplitter; t=3mm NIR 700-1100nm

The 48-389 is a 12.5 mm diameter beamsplitter, specifically designed for use in the near-infrared (NIR) spectrum, with a wavelength range of 700-1100nm. This beamsplitter is sourced from Edmund Optics, a leading vendor in the optical industry, and is available for immediate purchase, as indicated by its "in stock" status on the vendor's website.

This beamsplitter is of the Thin BS subtype, which refers to its thin lens shape. The lens has a diameter of 12.5mm and a thickness of 3mm, making it a compact yet robust option for various optical applications. The lens material is N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties, including high transparency and low autofluorescence.

The beamsplitter's coating is EDM 48-389, which is applied to the front surface. This coating is specifically designed to optimize the beamsplitter's performance in the NIR spectrum, ensuring high reflection (30%) and transmission (70%) at the specified wavelength of 1064nm.