Design and Fabrication of Protection Window Against YAG Laser

Window protection glass against a YAG laser based on a bandpass absorption filter was fabricated from bismuth oxide doped copper phosphate glass with series of xBi(2)O(3)-(40-x) ZnO-10Na(2)O-6Cu(2)O-44P(2)O(5) in molar ratio with x=0, 5 and 10 and were prepared by using a conventional glass casting and quenching technique. The density was measured by the conventional Archimedes method and the molar volume was calculated. Bismuth oxide is a heavy element; by increasing the doping in a glass composition it can cause an unusual phenomenon between the density and molar volume, they can have the same trend. The glass was investigated by using the XRD technique, which proved the systems are completely in the glass state. Optical spectroscopic analysis of the glass filter from the transmittance data showed the UV and the IR cut-off bands to the bandpass filter, which confirmed the band absorption in the IR cut-off included the Nd:YAG laser wavelength, which can be used for a glass laser safety window.