| This fused quartz material is virtually free of OH- ions allowing it to provide superior transmit-tance in the 2.7 [im wavelength ("water band") region. I2-IR is a high quality optical grade IR fused quartz with outstanding homogeneity and bubble characteristics. A commercial quality of IR quartz is also available, however it often contains many small bubbles and should only be used for non-imaging applications. Comercial Grades & Optical Grade G1 & A1 In thin, small pieces, G1 fused quartz/silica material is virtually bubble-free. Elements built from larger pieces will most likely contain bubbles.Your application should not be sensitive to these inclusions. G1 provides good UV and visible transmission. In cases where simple light gathering and strong mechanical properties are the primary goals, G1 grade provides excellent performance at a low price. A1 is ideal for all but the most demanding optical applications. All the materials used in this grade are guaranteed to be Grade B or better, providing excellent optical and physical properties at a reasonable price. A1 is an ideal material for larger-sized optical compontents. |