Fictive temperature dependences of optical properties in Yb-doped silica glass

摘要

Correlation between Yb~(3+) optical properties and structural disorder of glass network has been investigated by using good quality Yb-doped silica glasses fabricated by MCVD method. Absorption spectra strongly depend on the fictive temperature, which is a good indicator of structural disorder in silica glass. Their dependences are affected by the codopants (Al and F). Fictive temperature dependence of refractive index has been also elucidated.