Electron-beam-induced absorption of laser radiation at λ = 193, 248, and 353 nm in quartz glass

The absorption of laser radiation at λ = 193, 248, and 353 nm in KU-1 quartz glass has been measured during the application to the test samples of an electron beam with an energy density up to 1 J/cm² in a pulse 80 ns long. The induced optical density is a linear function of the specific power of the ionizing radiation applied to the sample. The coefficients of these linear proportionalities are 8, 4.6, and 0.5 cm²/GW at the specified wavelengths. Analysis shows that this coefficient gives the most comprehensive characterization of the optical properties of the material at the time at which the intense ionizing radiation is applied.