This is a 098-0125FR-300 model mirror, manufactured by EKSMA Optics, with a diameter of 101.6 mm and a thickness of 15 mm at the edge. The mirror is designed as a plano-concave spherical mirror, featuring a radius of curvature (R1) of -300 mm, which results in an effective focal length (EFL) of -150 mm.
The mirror is made of N-BK7 Schott glass, a popular material in the optical industry due to its excellent optical properties and wide transmission range. This particular mirror is designed for use within the wavelength range of 600-1100 nm.
The mirror's front surface is coated with an enhanced silver coating, designated as 'eks enhsil600110045'. This coating is specifically designed for use within the 600-1100 nm wavelength range, providing high reflectivity and durability.
For more information, including availability and pricing, please refer to the vendor's website at https://eksmaoptics.com/optical-components/metallic-mirrors/enhanced-silver-mirrors/.