Infrared properties of CVD β-SiC

Abstract The temperature and frequency dependent infrared properties of polycrystalline CVD β-SiC have been measured. This was accomplished using both broadband and narrowband (laser) measurements as a function of temperature from room temperature up to 900 K. Calculated multiphonon absorption shows good agreement with experiments. Furthermore, the thermo-optic coefficient was measured in the 2.5–5 μm region and the BSDF for CVD β-SiC was measured at 0.6328 μm for the first time.