This is a 091-0115R-1500 12.7 mm Dia. N-BK7 Protected Aluminium Spherical Plano-Concave Mirror, with a thickness of 6mm and a coating optimized for a wavelength of 300nm. The mirror is sourced from EKSMA Optics, a reputable vendor in the optical components industry.
The mirror is designed as a curved mirror with a concave base shape and a spherical geometry. It has a diameter of 12.7mm and a thickness edge of 6mm. The effective focal length (EFL) of this mirror is -750, and the radius of curvature (R1) is -1500.
The mirror is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties. The coating on the front surface is EKS 0015PROTAL 3000, which is specifically designed for this mirror to enhance its performance at the specified wavelength.
This mirror is available for purchase from EKSMA Optics' website, where you can find more detailed specifications and related products. The link to the product page is provided in the item data for your convenience.