The 20Z20BD.1 Broadband Dielectric Mirror is an extremely versatile mirror for laboratory applications and highly efficient over a broad wavelength range. This 2 inch (50.8 mm) diameter mirror is made from a 12.7 mm thick Zerodur substrate. Zerodur is a glass-ceramic material where thermal expansion is nominally zero. This extra stability can be critical for applications requiring diffraction limited performance. The BD-1 coating is extremely durable and will withstand repeated cleaning. This mirror has a λ/10 surface flatness and a 15-5 surface quality.

20 z20bd。宽带介质反射镜是一种适用于实验室的多功能反射镜,在波长范围内具有很高的效率。这面直径2英寸(50.8毫米)的镜子是由12.7毫米厚的零调衬底制成的。零是一种热膨胀名义上为零的微晶玻璃材料。对于需要衍射限制性能的应用程序,这种额外的稳定性是至关重要的。BD-1涂层非常耐用,可以经受多次清洗。这个镜子λ/今天比赛10表面平面度和表面质量。