This is a 092-0125R-1500 protected silver plano-concave spherical mirror, sourced from EKSMA Optics. The mirror has a base shape of a circle with a diameter of 25.4 mm and a thickness edge of 6 mm. The mirror's geometry is spherical, with a radius of curvature (R1) of -1500 mm, resulting in a focal length of -750 mm (EFL).
The mirror is made of N-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties and wide transmission range. This mirror, in particular, is designed to operate at a wavelength of 400 nm.
The mirror's coating is a protected silver coating, denoted as 'eks 0025protsil 4000'. Protected silver coatings offer high reflectivity and durability, making them suitable for a wide range of applications.
This mirror is currently in stock and available for purchase. For more information, please refer to the vendor's website at https://eksmaoptics.com/optical-components/metallic-mirrors/protected-silver-mirrors/.