Iron-doped glass
This glass exhibits extended strong UV-near visible absorption
consisting of four UV peaks at 235, 310, 350 and 380 nm and connected
with a stronger broad visible band centered at about
480 nm. The irradiated iron-doped glass reveals the same UV
absorption as before irradiation and a new induced band is identified
at about 500 nm and the rest of the visible spectrum decreases
in intensity.