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High-temperature transmittance spectrum of germanium films was obtained by a Fourier Transform infrared spectroscopy with a high-temperature accessory. The optical constants were determined by transmittance spectrum fitting with a Gaussian oscillator as the dispersion model. The analysis results showed that both the refractive index and extinction coefficient increased with the increasing temperature...
The effects of thermal treatment on infrared optical properties of SiO2 films on Si substrates by ion beam sputtering technology were investigated. Complex refractive index of SiO2 films was calculated from Fourier transform infrared transmission spectrum from 400 to 4000cm−1. Absorption band properties associated with Si-O-Si stretching, bending, rocking mode at about 1080cm−1, 816cm−1, 460cm−1 were...
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