Citation/Abstract

Optical components consisting of substrates and coated substrates were exposed to gamma radiation from a $\sp{60}$Co source. Transmittance spectra for the samples were taken before and up to 2 weeks after the time of radiation exposure. Recovery of radiation induced effects were considered and samples were kept at different temperatures following each irradiation.

The near-earth space radiation environment is described. The theory of radiation effects in materials is presented. Relevant optical theory is discussed as well. Pre- and post-irradiation transmittance spectra are presented for the samples. Pre- and post-irradiation optical constants calculated from a harmonic oscillator fit for one sample are also presented as well as the oscillator parameters. Specific transmittance characteristics of components calculated before and after irradiation are also presented.