The 20QW20-2 is a Excimer Grade UV Fused Silica window, 50.0 mm in diameter and 3.0 mm thick with high damage threshold V-coating at 532 nm.

20QW20-2是一种准分子级UV熔融二氧化硅窗,直径50.0 mm,厚度3.0 mm,在532 nm处有高损伤阈值v涂层。