These extremely pure fused silica materials offer good transmittance down into the deep UV. They provide outstanding homogeneity making them ideal for applications demanding superior wavefront performance. As fused silica materials, they show no fluorescence or discoloration when exposed to radiation shorter than 290 nm. S1-UVA has slightly better homogeneity and fewer and smaller bubbles than S1-UVB. Unless otherwise specified, the UV grade optical elements found in this handbook are manufactured out of S1-UVB.
S1-UV Ultraviolet Grade Fused Silica, Grades A and B
