For the investigation of the influence of microstructure of optical thin films on the in-plane thermal diffusivity of glass substrate coated by that films, we constructed the AC calorimeter which uses argon-ion laser as a thermal source and measured s...
For the investigation of the influence of microstructure of optical thin films on the in-plane thermal diffusivity of glass substrate coated by that films, we constructed the AC calorimeter which uses argon-ion laser as a thermal source and measured several kinds of ZnS optical thin films which prepared by the changing of thermal evaporation speed such as 5$\AA$/s, 10$\AA$/s, 20$\AA$/s, 40$\AA$/s, 60$\AA$/s. The result showed that the thermal diffusivity decreases as the temperature increases. Also, when the evaporation speed is 20$\AA$/s, the thermal diffusivity has maximum value, and the variation of the thermal diffusivities are 27% at maximum.