Main > Chinese Optics Letters >  Volume 13 >  Issue 2 >  Page 023101 > Article
  • Abstract
Chinese Optics Letters, Vol. 13, Issue 2, 023101 (2015)

Moisture absorption characteristics of a SiO2 film from 2 to 3 μm

Yun Cui*, Hao Li, Kui Yi, and Jianda Shao

Author Affiliations

  • Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China

Abstract

We prepare SiO2 coatings on different substrates by either electron-beam evaporation or dual ion-beam sputtering. The relative transmittances of the SiO2 coatings are measured during the heating process. The SiO2 coating microstructures are studied. Results indicate that the intensity and peak position of moisture absorption are closely related to the microstructures of the coatings. The formation of microstructures depends not only on the preparation process of the coatings but also on the substrate characteristics.

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