20D20BD.1 50.8 mm Dia. Borofloat 33 Broadband Dielectric Mirror; t=12.7mm 488-694nm

The 20D20BD.1 is a high-quality Dielectric Mirror, sourced from the reputable vendor MKS/Newport. This mirror, designed for broadband applications, boasts a diameter of 50.8 mm and a thickness of 12.7 mm, making it a robust and reliable choice for various optical setups.

The mirror's base shape is circular, a common and versatile choice in optical systems due to its uniformity and ease of alignment. The material of the mirror is Borofloat 33, a type of glass known for its excellent optical properties, chemical resistance, and mechanical strength.

The mirror is coated with a new bd.1 aoi 0 coating on the front, designed to enhance its reflective properties across a broad spectrum of wavelengths, specifically from 488nm to 694nm. This broadband coating ensures high reflectivity, making it suitable for a wide range of applications.

The mirror is also designed in the shape of a thin lens, suggesting that it may have some focusing or diverging properties, depending on its curvature. However, this is not explicitly stated in the provided data.