Investigation of the Young's modulus and thermal expansion of amorphous titania-doped tantala films.

Abstract

The current generation of advanced gravitational wave detectors utilize titania-doped tantala/silica multilayer stacks for their mirror coatings. The properties of the low-refractive-index silica are well known; however, in the absence of detailed direct measurements, the material parameters of Young's modulus and coefficient of thermal expansion (CTE) of… (More)
DOI: 10.1364/AO.53.003196

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