091-0125FR-500 12.7 mm Dia. N-BK7 Enhanced Silver Plano-Concave Spherical Mirror; t=6mm 600-1100nm

This product is a curved mirror (concave) with a base shape of a circle, offered by EKSMA Optics. The mirror has a diameter of 12.7 mm and a thickness edge of 6 mm, making it a compact and robust option for various applications. The effective focal length (EFL) of this mirror is -250 mm, and its radius of curvature (R1) is -500 mm, indicating a strongly curved surface that can effectively focus or collimate light.

The mirror is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transmission range. This particular mirror is designed for use with a wavelength of 800 nm, although its enhanced silver coating allows it to perform well within the 600-1100 nm range. The coating, denoted as 'eks enhsil600110045', ensures high reflectivity and durability, making this mirror suitable for various applications, including laser systems and interferometry.