Models for Analyzing Spectral Responsivity of Thermal Radiation Detector with Gold-Black

Abstract

The dependence of the relative spectral responsivity of a thermal radiation detector with a gold-black absorber on thickness of the gold-black layer was studied using models that consider absorption and reflection of incident energy within the absorber. In the models, incident energy is absorbed near the surface and transmitted through the gold-black absorber as heat. The models were formulated, and absorption coefficient and loss coefficient were estimated using the formulation and real data. To get more accurate models, incident energy was assumed to be absorbed gradually within the absorber and transmitted through it from there as heat. The dependence calculated using the models agreed well with real data.